56b3222b79
Remove the canonicalization of `trunc` to `i1` according to the
suggestion of
https://github.com/llvm/llvm-project/pull/83829#issuecomment-1986801166
a84e66a92d/llvm/lib/Transforms/InstCombine/InstCombineCasts.cpp (L737-L745)
Alive2: https://alive2.llvm.org/ce/z/cacYVA
37 lines
999 B
LLVM
37 lines
999 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s
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define i1 @test0(i39 %X, i39 %A) {
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; CHECK-LABEL: @test0(
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; CHECK-NEXT: [[B:%.*]] = lshr i39 [[X:%.*]], [[A:%.*]]
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; CHECK-NEXT: [[D:%.*]] = trunc i39 [[B]] to i1
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; CHECK-NEXT: ret i1 [[D]]
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;
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%B = lshr i39 %X, %A
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%D = trunc i39 %B to i1
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ret i1 %D
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}
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define i1 @test1(i799 %X, i799 %A) {
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; CHECK-LABEL: @test1(
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; CHECK-NEXT: [[B:%.*]] = lshr i799 [[X:%.*]], [[A:%.*]]
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; CHECK-NEXT: [[D:%.*]] = trunc i799 [[B]] to i1
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; CHECK-NEXT: ret i1 [[D]]
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;
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%B = lshr i799 %X, %A
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%D = trunc i799 %B to i1
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ret i1 %D
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}
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define <2 x i1> @test0vec(<2 x i39> %X, <2 x i39> %A) {
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; CHECK-LABEL: @test0vec(
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; CHECK-NEXT: [[B:%.*]] = lshr <2 x i39> [[X:%.*]], [[A:%.*]]
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; CHECK-NEXT: [[D:%.*]] = trunc <2 x i39> [[B]] to <2 x i1>
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; CHECK-NEXT: ret <2 x i1> [[D]]
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;
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%B = lshr <2 x i39> %X, %A
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%D = trunc <2 x i39> %B to <2 x i1>
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ret <2 x i1> %D
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}
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