c11051a400
I had initially assumed this was the problem with https://github.com/llvm/llvm-project/issues/55271#issuecomment-1133426243 But it turns out that was a simpler issue. This patch is still more correct than what we were doing before so figured I'd submit it anyway. No test case because I'm not sure how to get an undef around until expansion. Looking at the test deltas I wonder if it be valid to combine (sext_inreg (freeze (aextload X))) -> (freeze (sextload X)). Reviewed By: efriedma Differential Revision: https://reviews.llvm.org/D126175
33 lines
993 B
LLVM
33 lines
993 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=wasm32-unknown-unknown | FileCheck %s
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; Regression test for PR41149.
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define void @mod() {
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; CHECK-LABEL: mod:
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; CHECK: .functype mod () -> ()
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; CHECK-NEXT: .local i32
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; CHECK-NEXT: # %bb.0:
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: i32.load8_u 0
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; CHECK-NEXT: local.tee 0
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: i32.const 24
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; CHECK-NEXT: i32.shl
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; CHECK-NEXT: i32.const 31
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; CHECK-NEXT: i32.shr_s
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; CHECK-NEXT: local.tee 0
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; CHECK-NEXT: i32.xor
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; CHECK-NEXT: local.get 0
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; CHECK-NEXT: i32.sub
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; CHECK-NEXT: i32.store8 0
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; CHECK-NEXT: # fallthrough-return
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%tmp = load <4 x i8>, <4 x i8>* undef
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%tmp2 = icmp slt <4 x i8> %tmp, zeroinitializer
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%tmp3 = sub <4 x i8> zeroinitializer, %tmp
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%tmp4 = select <4 x i1> %tmp2, <4 x i8> %tmp3, <4 x i8> %tmp
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store <4 x i8> %tmp4, <4 x i8>* undef
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ret void
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}
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