36 lines
1.0 KiB
LLVM
36 lines
1.0 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -newgvn -S | FileCheck %s
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define i32 @main() {
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; CHECK-LABEL: @main(
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; CHECK-NEXT: block1:
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; CHECK-NEXT: br label [[BLOCK2:%.*]]
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; CHECK: block2:
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; CHECK-NEXT: ret i32 0
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;
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block1:
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%z1 = bitcast i32 0 to i32
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br label %block2
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block2:
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%z2 = bitcast i32 0 to i32
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ret i32 %z2
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}
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; Test that we simplify selects properly
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define i64 @simplifyselect(i64 %x, i64 %y, i1 %c1, i1 %c2, i1 %zzz) {
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; CHECK-LABEL: @simplifyselect(
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; CHECK-NEXT: [[SHARED:%.*]] = add i64 [[X:%.*]], [[Y:%.*]]
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; CHECK-NEXT: [[R1:%.*]] = select i1 [[C1:%.*]], i64 [[SHARED]], i64 [[X]]
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; CHECK-NEXT: [[R2:%.*]] = select i1 [[C2:%.*]], i64 [[SHARED]], i64 [[Y]]
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; CHECK-NEXT: [[R:%.*]] = add i64 [[R1]], [[R2]]
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; CHECK-NEXT: ret i64 [[R]]
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;
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%shared = add i64 %x, %y
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%r1 = select i1 %c1, i64 %shared, i64 %x
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%r2 = select i1 %c2, i64 %shared, i64 %y
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%tmp = select i1 %c2, i64 %x, i64 0
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%r2_eq2 = select i1 %zzz, i64 %r2, i64 %r2
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%r = add i64 %r1, %r2_eq2
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ret i64 %r
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}
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