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