d51fcd4ed8
This patch adds support for canonicalization of icmp with a scalable splat. Some optimizations assume that `icmp pred X, APInt C` is in canonical form. Fixes https://github.com/llvm/llvm-project/issues/83931.
16 lines
762 B
LLVM
16 lines
762 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 4
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; RUN: opt -S -passes=instcombine < %s | FileCheck %s
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define <vscale x 2 x i1> @dont_crash(<vscale x 2 x i64> %x) {
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; CHECK-LABEL: define <vscale x 2 x i1> @dont_crash(
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; CHECK-SAME: <vscale x 2 x i64> [[X:%.*]]) {
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[RET:%.*]] = icmp sgt <vscale x 2 x i64> [[X]], shufflevector (<vscale x 2 x i64> insertelement (<vscale x 2 x i64> poison, i64 -309383, i64 0), <vscale x 2 x i64> poison, <vscale x 2 x i32> zeroinitializer)
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; CHECK-NEXT: ret <vscale x 2 x i1> [[RET]]
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;
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entry:
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%div = sdiv <vscale x 2 x i64> %x, splat (i64 309383)
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%ret = icmp sge <vscale x 2 x i64> %div, zeroinitializer
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ret <vscale x 2 x i1> %ret
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}
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