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TheRock/compiler/amd-llvm/llvm/test/Transforms/InstCombine/pr38915.ll
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Flatten subprojects into a single base monorepo
2026-09-02 16:34:47 -07:00

23 lines
809 B
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -passes=instcombine -S | FileCheck %s
define i32 @PR38915(i32 %x, i32 %y, i32 %z) {
; CHECK-LABEL: @PR38915(
; CHECK-NEXT: [[TMP1:%.*]] = add i32 [[X:%.*]], -1
; CHECK-NEXT: [[TMP2:%.*]] = add i32 [[Y:%.*]], -1
; CHECK-NEXT: [[M1N:%.*]] = call i32 @llvm.smin.i32(i32 [[TMP1]], i32 [[TMP2]])
; CHECK-NEXT: [[M2:%.*]] = call i32 @llvm.smax.i32(i32 [[M1N]], i32 [[Z:%.*]])
; CHECK-NEXT: [[M2N:%.*]] = xor i32 [[M2]], -1
; CHECK-NEXT: ret i32 [[M2N]]
;
%xn = sub i32 0, %x
%yn = sub i32 0, %y
%c1 = icmp sgt i32 %xn, %yn
%m1 = select i1 %c1, i32 %xn, i32 %yn
%m1n = xor i32 %m1, -1
%c2 = icmp sgt i32 %m1n, %z
%m2 = select i1 %c2, i32 %m1n, i32 %z
%m2n = xor i32 %m2, -1
ret i32 %m2n
}