485 lines
14 KiB
LLVM
485 lines
14 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -instcombine -S %s | FileCheck %s
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declare { i32, i1 } @llvm.usub.with.overflow.i32(i32, i32)
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define i32 @test1(i32 %a, i32 %b) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ult i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[COND_NOT]], label [[BB3:%.*]], label [[BB1:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br i1 false, label [[BB2:%.*]], label [[BB3]]
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; CHECK: bb2:
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; CHECK-NEXT: ret i32 undef
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp uge i32 %a, %b
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br i1 %cond, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb2, label %bb3
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test2(i32 %a, i32 %b) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: [[COND_NOT:%.*]] = icmp ult i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[COND_NOT]], label [[BB3:%.*]], label [[BB1:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br i1 false, label [[BB3]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[SUB1:%.*]] = sub nuw i32 [[A]], [[B]]
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; CHECK-NEXT: ret i32 [[SUB1]]
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp uge i32 %a, %b
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br i1 %cond, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb3, label %bb2
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test3(i32 %a, i32 %b) {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[COND]], label [[BB1:%.*]], label [[BB3:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br i1 false, label [[BB2:%.*]], label [[BB3]]
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; CHECK: bb2:
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; CHECK-NEXT: ret i32 undef
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp ugt i32 %a, %b
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br i1 %cond, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb2, label %bb3
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test4(i32 %a, i32 %b) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[COND]], label [[BB1:%.*]], label [[BB3:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br i1 false, label [[BB3]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[SUB1:%.*]] = sub nuw i32 [[A]], [[B]]
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; CHECK-NEXT: ret i32 [[SUB1]]
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp ugt i32 %a, %b
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br i1 %cond, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb3, label %bb2
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test5(i32 %a, i32 %b) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[COND]], label [[BB1:%.*]], label [[BB3:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br i1 false, label [[BB3]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[SUB1:%.*]] = sub nuw i32 [[A]], [[B]]
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; CHECK-NEXT: ret i32 [[SUB1]]
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp eq i32 %a, %b
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br i1 %cond, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb3, label %bb2
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test6(i32 %a, i32 %b) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: [[COND:%.*]] = icmp ult i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[COND]], label [[BB1:%.*]], label [[BB3:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br i1 true, label [[BB3]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: ret i32 undef
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp ult i32 %a, %b
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br i1 %cond, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb3, label %bb2
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test7(i32 %a, i32 %b) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: [[COND:%.*]] = icmp slt i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[COND]], label [[BB1:%.*]], label [[BB3:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: [[SUB1:%.*]] = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 [[A]], i32 [[B]])
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; CHECK-NEXT: [[C1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 1
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; CHECK-NEXT: br i1 [[C1]], label [[BB3]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[R1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 0
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; CHECK-NEXT: ret i32 [[R1]]
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp slt i32 %a, %b
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br i1 %cond, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb3, label %bb2
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test8(i32 %a, i32 %b) {
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; CHECK-LABEL: @test8(
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; CHECK-NEXT: [[COND_NOT:%.*]] = icmp eq i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: br i1 [[COND_NOT]], label [[BB3:%.*]], label [[BB1:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: [[SUB1:%.*]] = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 [[A]], i32 [[B]])
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; CHECK-NEXT: [[C1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 1
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; CHECK-NEXT: br i1 [[C1]], label [[BB3]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[R1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 0
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; CHECK-NEXT: ret i32 [[R1]]
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp ne i32 %a, %b
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br i1 %cond, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb3, label %bb2
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test9(i32 %a, i32 %b, i1 %cond2) {
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; CHECK-LABEL: @test9(
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; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[AND:%.*]] = and i1 [[COND]], [[COND2:%.*]]
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; CHECK-NEXT: br i1 [[AND]], label [[BB1:%.*]], label [[BB3:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br i1 false, label [[BB3]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[SUB1:%.*]] = sub nuw i32 [[A]], [[B]]
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; CHECK-NEXT: ret i32 [[SUB1]]
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp ugt i32 %a, %b
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%and = and i1 %cond, %cond2
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br i1 %and, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb3, label %bb2
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test9_logical(i32 %a, i32 %b, i1 %cond2) {
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; CHECK-LABEL: @test9_logical(
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; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[AND:%.*]] = and i1 [[COND]], [[COND2:%.*]]
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; CHECK-NEXT: br i1 [[AND]], label [[BB1:%.*]], label [[BB3:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: br i1 false, label [[BB3]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[SUB1:%.*]] = sub nuw i32 [[A]], [[B]]
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; CHECK-NEXT: ret i32 [[SUB1]]
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp ugt i32 %a, %b
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%and = select i1 %cond, i1 %cond2, i1 false
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br i1 %and, label %bb1, label %bb3
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb3, label %bb2
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test10(i32 %a, i32 %b, i1 %cond2) {
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; CHECK-LABEL: @test10(
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; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
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; CHECK-NEXT: [[AND:%.*]] = and i1 [[COND]], [[COND2:%.*]]
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; CHECK-NEXT: br i1 [[AND]], label [[BB3:%.*]], label [[BB1:%.*]]
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; CHECK: bb1:
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; CHECK-NEXT: [[SUB1:%.*]] = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 [[A]], i32 [[B]])
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; CHECK-NEXT: [[C1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 1
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; CHECK-NEXT: br i1 [[C1]], label [[BB3]], label [[BB2:%.*]]
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; CHECK: bb2:
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; CHECK-NEXT: [[R1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 0
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; CHECK-NEXT: ret i32 [[R1]]
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; CHECK: bb3:
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; CHECK-NEXT: ret i32 0
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;
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%cond = icmp ugt i32 %a, %b
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%and = and i1 %cond, %cond2
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br i1 %and, label %bb3, label %bb1
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bb1:
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%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
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%r1 = extractvalue { i32, i1 } %sub1, 0
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%c1 = extractvalue { i32, i1 } %sub1, 1
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br i1 %c1, label %bb3, label %bb2
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bb2:
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ret i32 %r1
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bb3:
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ret i32 0
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}
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define i32 @test10_logical(i32 %a, i32 %b, i1 %cond2) {
|
||
|
|
; CHECK-LABEL: @test10_logical(
|
||
|
|
; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
|
||
|
|
; CHECK-NEXT: [[AND:%.*]] = and i1 [[COND]], [[COND2:%.*]]
|
||
|
|
; CHECK-NEXT: br i1 [[AND]], label [[BB3:%.*]], label [[BB1:%.*]]
|
||
|
|
; CHECK: bb1:
|
||
|
|
; CHECK-NEXT: [[SUB1:%.*]] = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 [[A]], i32 [[B]])
|
||
|
|
; CHECK-NEXT: [[C1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[C1]], label [[BB3]], label [[BB2:%.*]]
|
||
|
|
; CHECK: bb2:
|
||
|
|
; CHECK-NEXT: [[R1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 0
|
||
|
|
; CHECK-NEXT: ret i32 [[R1]]
|
||
|
|
; CHECK: bb3:
|
||
|
|
; CHECK-NEXT: ret i32 0
|
||
|
|
;
|
||
|
|
%cond = icmp ugt i32 %a, %b
|
||
|
|
%and = select i1 %cond, i1 %cond2, i1 false
|
||
|
|
br i1 %and, label %bb3, label %bb1
|
||
|
|
|
||
|
|
bb1:
|
||
|
|
%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
|
||
|
|
%r1 = extractvalue { i32, i1 } %sub1, 0
|
||
|
|
%c1 = extractvalue { i32, i1 } %sub1, 1
|
||
|
|
br i1 %c1, label %bb3, label %bb2
|
||
|
|
|
||
|
|
bb2:
|
||
|
|
ret i32 %r1
|
||
|
|
|
||
|
|
bb3:
|
||
|
|
ret i32 0
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @test11(i32 %a, i32 %b, i1 %cond2) {
|
||
|
|
; CHECK-LABEL: @test11(
|
||
|
|
; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
|
||
|
|
; CHECK-NEXT: [[OR:%.*]] = or i1 [[COND]], [[COND2:%.*]]
|
||
|
|
; CHECK-NEXT: br i1 [[OR]], label [[BB1:%.*]], label [[BB3:%.*]]
|
||
|
|
; CHECK: bb1:
|
||
|
|
; CHECK-NEXT: [[SUB1:%.*]] = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 [[A]], i32 [[B]])
|
||
|
|
; CHECK-NEXT: [[C1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[C1]], label [[BB3]], label [[BB2:%.*]]
|
||
|
|
; CHECK: bb2:
|
||
|
|
; CHECK-NEXT: [[R1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 0
|
||
|
|
; CHECK-NEXT: ret i32 [[R1]]
|
||
|
|
; CHECK: bb3:
|
||
|
|
; CHECK-NEXT: ret i32 0
|
||
|
|
;
|
||
|
|
%cond = icmp ugt i32 %a, %b
|
||
|
|
%or = or i1 %cond, %cond2
|
||
|
|
br i1 %or, label %bb1, label %bb3
|
||
|
|
|
||
|
|
bb1:
|
||
|
|
%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
|
||
|
|
%r1 = extractvalue { i32, i1 } %sub1, 0
|
||
|
|
%c1 = extractvalue { i32, i1 } %sub1, 1
|
||
|
|
br i1 %c1, label %bb3, label %bb2
|
||
|
|
|
||
|
|
bb2:
|
||
|
|
ret i32 %r1
|
||
|
|
|
||
|
|
bb3:
|
||
|
|
ret i32 0
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @test11_logical(i32 %a, i32 %b, i1 %cond2) {
|
||
|
|
; CHECK-LABEL: @test11_logical(
|
||
|
|
; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
|
||
|
|
; CHECK-NEXT: [[OR:%.*]] = or i1 [[COND]], [[COND2:%.*]]
|
||
|
|
; CHECK-NEXT: br i1 [[OR]], label [[BB1:%.*]], label [[BB3:%.*]]
|
||
|
|
; CHECK: bb1:
|
||
|
|
; CHECK-NEXT: [[SUB1:%.*]] = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 [[A]], i32 [[B]])
|
||
|
|
; CHECK-NEXT: [[C1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[C1]], label [[BB3]], label [[BB2:%.*]]
|
||
|
|
; CHECK: bb2:
|
||
|
|
; CHECK-NEXT: [[R1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 0
|
||
|
|
; CHECK-NEXT: ret i32 [[R1]]
|
||
|
|
; CHECK: bb3:
|
||
|
|
; CHECK-NEXT: ret i32 0
|
||
|
|
;
|
||
|
|
%cond = icmp ugt i32 %a, %b
|
||
|
|
%or = select i1 %cond, i1 true, i1 %cond2
|
||
|
|
br i1 %or, label %bb1, label %bb3
|
||
|
|
|
||
|
|
bb1:
|
||
|
|
%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
|
||
|
|
%r1 = extractvalue { i32, i1 } %sub1, 0
|
||
|
|
%c1 = extractvalue { i32, i1 } %sub1, 1
|
||
|
|
br i1 %c1, label %bb3, label %bb2
|
||
|
|
|
||
|
|
bb2:
|
||
|
|
ret i32 %r1
|
||
|
|
|
||
|
|
bb3:
|
||
|
|
ret i32 0
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @test12(i32 %a, i32 %b, i1 %cond2) {
|
||
|
|
; CHECK-LABEL: @test12(
|
||
|
|
; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
|
||
|
|
; CHECK-NEXT: [[OR:%.*]] = or i1 [[COND]], [[COND2:%.*]]
|
||
|
|
; CHECK-NEXT: br i1 [[OR]], label [[BB3:%.*]], label [[BB1:%.*]]
|
||
|
|
; CHECK: bb1:
|
||
|
|
; CHECK-NEXT: [[SUB1:%.*]] = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 [[A]], i32 [[B]])
|
||
|
|
; CHECK-NEXT: [[C1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[C1]], label [[BB3]], label [[BB2:%.*]]
|
||
|
|
; CHECK: bb2:
|
||
|
|
; CHECK-NEXT: [[R1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 0
|
||
|
|
; CHECK-NEXT: ret i32 [[R1]]
|
||
|
|
; CHECK: bb3:
|
||
|
|
; CHECK-NEXT: ret i32 0
|
||
|
|
;
|
||
|
|
%cond = icmp ugt i32 %a, %b
|
||
|
|
%or = or i1 %cond, %cond2
|
||
|
|
br i1 %or, label %bb3, label %bb1
|
||
|
|
|
||
|
|
bb1:
|
||
|
|
%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
|
||
|
|
%r1 = extractvalue { i32, i1 } %sub1, 0
|
||
|
|
%c1 = extractvalue { i32, i1 } %sub1, 1
|
||
|
|
br i1 %c1, label %bb3, label %bb2
|
||
|
|
|
||
|
|
bb2:
|
||
|
|
ret i32 %r1
|
||
|
|
|
||
|
|
bb3:
|
||
|
|
ret i32 0
|
||
|
|
}
|
||
|
|
|
||
|
|
define i32 @test12_logical(i32 %a, i32 %b, i1 %cond2) {
|
||
|
|
; CHECK-LABEL: @test12_logical(
|
||
|
|
; CHECK-NEXT: [[COND:%.*]] = icmp ugt i32 [[A:%.*]], [[B:%.*]]
|
||
|
|
; CHECK-NEXT: [[OR:%.*]] = or i1 [[COND]], [[COND2:%.*]]
|
||
|
|
; CHECK-NEXT: br i1 [[OR]], label [[BB3:%.*]], label [[BB1:%.*]]
|
||
|
|
; CHECK: bb1:
|
||
|
|
; CHECK-NEXT: [[SUB1:%.*]] = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 [[A]], i32 [[B]])
|
||
|
|
; CHECK-NEXT: [[C1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 1
|
||
|
|
; CHECK-NEXT: br i1 [[C1]], label [[BB3]], label [[BB2:%.*]]
|
||
|
|
; CHECK: bb2:
|
||
|
|
; CHECK-NEXT: [[R1:%.*]] = extractvalue { i32, i1 } [[SUB1]], 0
|
||
|
|
; CHECK-NEXT: ret i32 [[R1]]
|
||
|
|
; CHECK: bb3:
|
||
|
|
; CHECK-NEXT: ret i32 0
|
||
|
|
;
|
||
|
|
%cond = icmp ugt i32 %a, %b
|
||
|
|
%or = select i1 %cond, i1 true, i1 %cond2
|
||
|
|
br i1 %or, label %bb3, label %bb1
|
||
|
|
|
||
|
|
bb1:
|
||
|
|
%sub1 = call { i32, i1 } @llvm.usub.with.overflow.i32(i32 %a, i32 %b)
|
||
|
|
%r1 = extractvalue { i32, i1 } %sub1, 0
|
||
|
|
%c1 = extractvalue { i32, i1 } %sub1, 1
|
||
|
|
br i1 %c1, label %bb3, label %bb2
|
||
|
|
|
||
|
|
bb2:
|
||
|
|
ret i32 %r1
|
||
|
|
|
||
|
|
bb3:
|
||
|
|
ret i32 0
|
||
|
|
}
|