bff34a0a5f
https://alive2.llvm.org/ce/z/Uy_x_b Fix: https://github.com/llvm/llvm-project/issues/59902 Reviewed By: dmgreen Differential Revision: https://reviews.llvm.org/D141359
24 lines
770 B
LLVM
24 lines
770 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=aarch64-none-linux-gnu | FileCheck %s
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; This used to miscompile because foldCSELOfCSEL function
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; doesn't check const x != y
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define i1 @test() {
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; CHECK-LABEL: test:
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; CHECK: // %bb.0:
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; CHECK-NEXT: mov x8, #9007199254740990
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; CHECK-NEXT: movk x8, #65503, lsl #16
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; CHECK-NEXT: movk x8, #65407, lsl #32
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; CHECK-NEXT: cmp x8, x8
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; CHECK-NEXT: csel x9, x8, x8, gt
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; CHECK-NEXT: cmp x9, x8
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; CHECK-NEXT: cset w0, eq
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; CHECK-NEXT: ret
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%1 = select i1 false, i64 0, i64 9006649496829950
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%2 = call i64 @llvm.smax.i64(i64 %1, i64 9006649496829950)
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%3 = icmp eq i64 %2, 9006649496829950
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ret i1 %3
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}
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declare i64 @llvm.smax.i64(i64, i64)
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