557bf3835b
See the following code:
4ae896fe97/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp (L9334-L9357)
> Combining: t47: i64 = xor t43, OpaqueConstant:i64<31808>
X: i64 = Constant<0>
Y: i64 = OpaqueConstant<31808>
The assertion failed because both `X` and `Y` are constants.
This patch allows opaque constants in `hasAndNotCompare` to fix the
issue.
Fixes https://github.com/llvm/llvm-project/issues/90730.
23 lines
680 B
LLVM
23 lines
680 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 4
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; RUN: llc < %s -mtriple=riscv64 -mattr=+zbb | FileCheck %s
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define i32 @pr90730(i32 %x, i1 %y, ptr %p) {
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; CHECK-LABEL: pr90730:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: lui a1, 8
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; CHECK-NEXT: addiw a1, a1, -960
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; CHECK-NEXT: andn a0, a1, a0
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; CHECK-NEXT: sw zero, 0(a2)
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; CHECK-NEXT: ret
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entry:
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%ext = zext i1 %y to i32
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%xor1 = xor i32 %ext, 31817
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%and1 = and i32 %xor1, %x
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store i32 %and1, ptr %p, align 4
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%v = load i32, ptr %p, align 4
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%and2 = and i32 %v, 31808
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%xor2 = xor i32 %and2, 31808
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store i32 0, ptr %p, align 4
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ret i32 %xor2
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}
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