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TheRock/compiler/amd-llvm/llvm/test/Transforms/GVN/convergent.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

30 lines
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LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -passes=gvn -o - %s | FileCheck %s
define i32 @foo(i1 %cond) {
; CHECK-LABEL: @foo(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[V0:%.*]] = call i32 @llvm.convergent()
; CHECK-NEXT: br i1 [[COND:%.*]], label [[BODY:%.*]], label [[END:%.*]]
; CHECK: body:
; CHECK-NEXT: [[V1:%.*]] = call i32 @llvm.convergent()
; CHECK-NEXT: br label [[END]]
; CHECK: end:
; CHECK-NEXT: [[RET:%.*]] = phi i32 [ [[V0]], [[ENTRY:%.*]] ], [ [[V1]], [[BODY]] ]
; CHECK-NEXT: ret i32 [[RET]]
;
entry:
%v0 = call i32 @llvm.convergent()
br i1 %cond, label %body, label %end
body:
%v1 = call i32 @llvm.convergent()
br label %end
end:
%ret = phi i32 [ %v0, %entry ], [ %v1, %body ]
ret i32 %ret
}
declare i32 @llvm.convergent() convergent nounwind readnone willreturn