348 lines
9.9 KiB
LLVM
348 lines
9.9 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -correlated-propagation -S | FileCheck %s
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define void @test1(i8* %ptr) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[A:%.*]] = load i8, i8* [[PTR:%.*]], align 1
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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;
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%A = load i8, i8* %ptr
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br label %bb
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bb:
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icmp ne i8* %ptr, null
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ret void
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}
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define void @test1_no_null_opt(i8* %ptr) #0 {
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; CHECK-LABEL: @test1_no_null_opt(
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; CHECK-NEXT: [[A:%.*]] = load i8, i8* [[PTR:%.*]], align 1
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[PTR]], null
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; CHECK-NEXT: ret void
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;
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%A = load i8, i8* %ptr
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br label %bb
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bb:
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icmp ne i8* %ptr, null
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ret void
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}
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define void @test2(i8* %ptr) {
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; CHECK-LABEL: @test2(
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; CHECK-NEXT: store i8 0, i8* [[PTR:%.*]], align 1
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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;
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store i8 0, i8* %ptr
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br label %bb
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bb:
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icmp ne i8* %ptr, null
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ret void
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}
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define void @test2_no_null_opt(i8* %ptr) #0 {
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; CHECK-LABEL: @test2_no_null_opt(
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; CHECK-NEXT: store i8 0, i8* [[PTR:%.*]], align 1
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[PTR]], null
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; CHECK-NEXT: ret void
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;
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store i8 0, i8* %ptr
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br label %bb
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bb:
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icmp ne i8* %ptr, null
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ret void
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}
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define void @test3() {
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; CHECK-LABEL: @test3(
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; CHECK-NEXT: [[PTR:%.*]] = alloca i8, align 1
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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;
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%ptr = alloca i8
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br label %bb
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bb:
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icmp ne i8* %ptr, null
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ret void
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}
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;; OK to remove icmp here since ptr is coming from alloca.
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define void @test3_no_null_opt() #0 {
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; CHECK-LABEL: @test3_no_null_opt(
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; CHECK-NEXT: [[PTR:%.*]] = alloca i8, align 1
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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;
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%ptr = alloca i8
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br label %bb
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bb:
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icmp ne i8* %ptr, null
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i1)
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define void @test4(i8* %dest, i8* %src) {
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; CHECK-LABEL: @test4(
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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;
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
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br label %bb
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bb:
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icmp ne i8* %dest, null
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icmp ne i8* %src, null
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ret void
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}
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define void @test4_no_null_opt(i8* %dest, i8* %src) #0 {
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; CHECK-LABEL: @test4_no_null_opt(
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null
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; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8* [[SRC]], null
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; CHECK-NEXT: ret void
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;
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
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br label %bb
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bb:
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icmp ne i8* %dest, null
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icmp ne i8* %src, null
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ret void
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}
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declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i1)
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define void @test5(i8* %dest, i8* %src) {
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; CHECK-LABEL: @test5(
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; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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;
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call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
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br label %bb
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bb:
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icmp ne i8* %dest, null
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icmp ne i8* %src, null
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ret void
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}
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define void @test5_no_null_opt(i8* %dest, i8* %src) #0 {
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; CHECK-LABEL: @test5_no_null_opt(
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; CHECK-NEXT: call void @llvm.memmove.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 false)
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null
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; CHECK-NEXT: [[TMP2:%.*]] = icmp ne i8* [[SRC]], null
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; CHECK-NEXT: ret void
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;
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call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 false)
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br label %bb
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bb:
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icmp ne i8* %dest, null
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icmp ne i8* %src, null
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ret void
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}
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declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i1)
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define void @test6(i8* %dest) {
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; CHECK-LABEL: @test6(
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; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[DEST:%.*]], i8 -1, i32 1, i1 false)
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: ret void
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;
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call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i1 false)
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br label %bb
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bb:
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icmp ne i8* %dest, null
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ret void
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}
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define void @test6_no_null_opt(i8* %dest) #0 {
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; CHECK-LABEL: @test6_no_null_opt(
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; CHECK-NEXT: call void @llvm.memset.p0i8.i32(i8* [[DEST:%.*]], i8 -1, i32 1, i1 false)
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[TMP1:%.*]] = icmp ne i8* [[DEST]], null
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; CHECK-NEXT: ret void
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;
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call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i1 false)
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br label %bb
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bb:
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icmp ne i8* %dest, null
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ret void
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}
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define void @test7(i8* %dest, i8* %src, i32 %len) {
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; CHECK-LABEL: @test7(
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 [[LEN:%.*]], i1 false)
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8* [[DEST]], null
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; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8* [[SRC]], null
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; CHECK-NEXT: ret void
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;
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i1 false)
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br label %bb
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bb:
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%KEEP1 = icmp ne i8* %dest, null
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%KEEP2 = icmp ne i8* %src, null
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ret void
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}
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declare void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) *, i8 addrspace(1) *, i32, i1)
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define void @test8(i8 addrspace(1) * %dest, i8 addrspace(1) * %src) {
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; CHECK-LABEL: @test8(
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; CHECK-NEXT: call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1)* [[DEST:%.*]], i8 addrspace(1)* [[SRC:%.*]], i32 1, i1 false)
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8 addrspace(1)* [[DEST]], null
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; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8 addrspace(1)* [[SRC]], null
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; CHECK-NEXT: ret void
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;
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call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) * %dest, i8 addrspace(1) * %src, i32 1, i1 false)
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br label %bb
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bb:
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%KEEP1 = icmp ne i8 addrspace(1) * %dest, null
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%KEEP2 = icmp ne i8 addrspace(1) * %src, null
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ret void
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}
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define void @test9(i8* %dest, i8* %src) {
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; CHECK-LABEL: @test9(
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i32(i8* [[DEST:%.*]], i8* [[SRC:%.*]], i32 1, i1 true)
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; CHECK-NEXT: br label [[BB:%.*]]
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; CHECK: bb:
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; CHECK-NEXT: [[KEEP1:%.*]] = icmp ne i8* [[DEST]], null
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; CHECK-NEXT: [[KEEP2:%.*]] = icmp ne i8* [[SRC]], null
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; CHECK-NEXT: ret void
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;
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i1 true)
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br label %bb
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bb:
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%KEEP1 = icmp ne i8* %dest, null
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%KEEP2 = icmp ne i8* %src, null
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ret void
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}
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declare void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg)
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define void @test10(i8* %arg1, i8* %arg2, i32 %non-pointer-arg) {
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; CHECK-LABEL: @test10(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null
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; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]]
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; CHECK: non_null:
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; CHECK-NEXT: call void @test10_helper(i8* nonnull [[ARG1]], i8* [[ARG2:%.*]], i32 [[NON_POINTER_ARG:%.*]])
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; CHECK-NEXT: br label [[NULL]]
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; CHECK: null:
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; CHECK-NEXT: call void @test10_helper(i8* [[ARG1]], i8* [[ARG2]], i32 [[NON_POINTER_ARG]])
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; CHECK-NEXT: ret void
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;
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entry:
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%is_null = icmp eq i8* %arg1, null
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br i1 %is_null, label %null, label %non_null
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non_null:
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call void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg)
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br label %null
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null:
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call void @test10_helper(i8* %arg1, i8* %arg2, i32 %non-pointer-arg)
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ret void
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}
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declare void @test11_helper(i8* %arg)
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define void @test11(i8* %arg1, i8** %arg2) {
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; CHECK-LABEL: @test11(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null
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; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]]
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; CHECK: non_null:
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; CHECK-NEXT: br label [[MERGE:%.*]]
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; CHECK: null:
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; CHECK-NEXT: [[ANOTHER_ARG:%.*]] = alloca i8, align 1
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[MERGED_ARG:%.*]] = phi i8* [ [[ANOTHER_ARG]], [[NULL]] ], [ [[ARG1]], [[NON_NULL]] ]
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; CHECK-NEXT: call void @test11_helper(i8* nonnull [[MERGED_ARG]])
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; CHECK-NEXT: ret void
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;
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entry:
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%is_null = icmp eq i8* %arg1, null
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br i1 %is_null, label %null, label %non_null
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non_null:
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br label %merge
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null:
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%another_arg = alloca i8
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br label %merge
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merge:
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%merged_arg = phi i8* [%another_arg, %null], [%arg1, %non_null]
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call void @test11_helper(i8* %merged_arg)
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ret void
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}
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declare void @test12_helper(i8* %arg)
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define void @test12(i8* %arg1, i8** %arg2) {
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; CHECK-LABEL: @test12(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[IS_NULL:%.*]] = icmp eq i8* [[ARG1:%.*]], null
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; CHECK-NEXT: br i1 [[IS_NULL]], label [[NULL:%.*]], label [[NON_NULL:%.*]]
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; CHECK: non_null:
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; CHECK-NEXT: br label [[MERGE:%.*]]
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; CHECK: null:
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; CHECK-NEXT: [[ANOTHER_ARG:%.*]] = load i8*, i8** [[ARG2:%.*]], align 8, !nonnull !0
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[MERGED_ARG:%.*]] = phi i8* [ [[ANOTHER_ARG]], [[NULL]] ], [ [[ARG1]], [[NON_NULL]] ]
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; CHECK-NEXT: call void @test12_helper(i8* nonnull [[MERGED_ARG]])
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; CHECK-NEXT: ret void
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;
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entry:
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%is_null = icmp eq i8* %arg1, null
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br i1 %is_null, label %null, label %non_null
|
||
|
|
|
||
|
|
non_null:
|
||
|
|
br label %merge
|
||
|
|
|
||
|
|
null:
|
||
|
|
%another_arg = load i8*, i8** %arg2, !nonnull !{}
|
||
|
|
br label %merge
|
||
|
|
|
||
|
|
merge:
|
||
|
|
%merged_arg = phi i8* [%another_arg, %null], [%arg1, %non_null]
|
||
|
|
call void @test12_helper(i8* %merged_arg)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
define i1 @test_store_same_block(i8* %arg) {
|
||
|
|
; CHECK-LABEL: @test_store_same_block(
|
||
|
|
; CHECK-NEXT: store i8 0, i8* [[ARG:%.*]], align 1
|
||
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp ne i8* [[ARG]], null
|
||
|
|
; CHECK-NEXT: ret i1 true
|
||
|
|
;
|
||
|
|
store i8 0, i8* %arg
|
||
|
|
%cmp = icmp ne i8* %arg, null
|
||
|
|
ret i1 %cmp
|
||
|
|
}
|
||
|
|
|
||
|
|
attributes #0 = { null_pointer_is_valid }
|