18 lines
654 B
LLVM
18 lines
654 B
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 5
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; REQUIRES: asserts
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; RUN: llc < %s -mtriple=x86_64-- -debug-counter=dagcombine=0 | FileCheck %s
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; BUG: shrinkAndImmediate folds away the AND after the ZEXT has already been folded away to SUBREG_TO_REG losing implicit zext.
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define i64 @test() {
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; CHECK-LABEL: test:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movabsq $-4294967295, %rax # imm = 0xFFFFFFFF00000001
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; CHECK-NEXT: movzwl %ax, %eax
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; CHECK-NEXT: retq
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%x = bitcast i64 u0xffffffff00000001 to i64
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%t = trunc i64 %x to i32
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%a = and i32 %t, 1
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%e = zext i32 %a to i64
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ret i64 %e
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}
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