forked from OSchip/llvm-project
467 lines
16 KiB
LLVM
467 lines
16 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=-bmi < %s | FileCheck %s --check-prefix=CHECK-NOBMI
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; RUN: llc -mtriple=x86_64-unknown-linux-gnu -mattr=+bmi < %s | FileCheck %s --check-prefix=CHECK-BMI
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; https://bugs.llvm.org/show_bug.cgi?id=37104
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; X: [byte3] [byte0]
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; Y: [byte2][byte1]
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define i8 @out8_constmask(i8 %x, i8 %y) {
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; CHECK-NOBMI-LABEL: out8_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: # kill: def $esi killed $esi def $rsi
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; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-NOBMI-NEXT: andb $60, %dil
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; CHECK-NOBMI-NEXT: andb $-61, %sil
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; CHECK-NOBMI-NEXT: leal (%rsi,%rdi), %eax
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; CHECK-NOBMI-NEXT: # kill: def $al killed $al killed $eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: out8_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: # kill: def $esi killed $esi def $rsi
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; CHECK-BMI-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-BMI-NEXT: andb $60, %dil
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; CHECK-BMI-NEXT: andb $-61, %sil
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; CHECK-BMI-NEXT: leal (%rsi,%rdi), %eax
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; CHECK-BMI-NEXT: # kill: def $al killed $al killed $eax
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; CHECK-BMI-NEXT: retq
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%mx = and i8 %x, 60
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%my = and i8 %y, -61
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%r = or i8 %mx, %my
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ret i8 %r
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}
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define i16 @out16_constmask(i16 %x, i16 %y) {
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; CHECK-NOBMI-LABEL: out16_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: # kill: def $esi killed $esi def $rsi
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; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-NOBMI-NEXT: andl $4080, %edi # imm = 0xFF0
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; CHECK-NOBMI-NEXT: andl $-4081, %esi # imm = 0xF00F
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; CHECK-NOBMI-NEXT: leal (%rsi,%rdi), %eax
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; CHECK-NOBMI-NEXT: # kill: def $ax killed $ax killed $eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: out16_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: # kill: def $esi killed $esi def $rsi
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; CHECK-BMI-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-BMI-NEXT: andl $4080, %edi # imm = 0xFF0
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; CHECK-BMI-NEXT: andl $-4081, %esi # imm = 0xF00F
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; CHECK-BMI-NEXT: leal (%rsi,%rdi), %eax
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; CHECK-BMI-NEXT: # kill: def $ax killed $ax killed $eax
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; CHECK-BMI-NEXT: retq
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%mx = and i16 %x, 4080
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%my = and i16 %y, -4081
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%r = or i16 %mx, %my
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ret i16 %r
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}
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define i32 @out32_constmask(i32 %x, i32 %y) {
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; CHECK-NOBMI-LABEL: out32_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: # kill: def $esi killed $esi def $rsi
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; CHECK-NOBMI-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-NOBMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
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; CHECK-NOBMI-NEXT: andl $-16776961, %esi # imm = 0xFF0000FF
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; CHECK-NOBMI-NEXT: leal (%rsi,%rdi), %eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: out32_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: # kill: def $esi killed $esi def $rsi
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; CHECK-BMI-NEXT: # kill: def $edi killed $edi def $rdi
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; CHECK-BMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
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; CHECK-BMI-NEXT: andl $-16776961, %esi # imm = 0xFF0000FF
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; CHECK-BMI-NEXT: leal (%rsi,%rdi), %eax
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; CHECK-BMI-NEXT: retq
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%mx = and i32 %x, 16776960
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%my = and i32 %y, -16776961
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%r = or i32 %mx, %my
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ret i32 %r
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}
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define i64 @out64_constmask(i64 %x, i64 %y) {
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; CHECK-NOBMI-LABEL: out64_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: movabsq $281474976645120, %rcx # imm = 0xFFFFFFFF0000
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; CHECK-NOBMI-NEXT: andq %rdi, %rcx
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; CHECK-NOBMI-NEXT: movabsq $-281474976645121, %rax # imm = 0xFFFF00000000FFFF
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; CHECK-NOBMI-NEXT: andq %rsi, %rax
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; CHECK-NOBMI-NEXT: orq %rcx, %rax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: out64_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: movabsq $281474976645120, %rcx # imm = 0xFFFFFFFF0000
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; CHECK-BMI-NEXT: andq %rdi, %rcx
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; CHECK-BMI-NEXT: movabsq $-281474976645121, %rax # imm = 0xFFFF00000000FFFF
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; CHECK-BMI-NEXT: andq %rsi, %rax
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; CHECK-BMI-NEXT: orq %rcx, %rax
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; CHECK-BMI-NEXT: retq
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%mx = and i64 %x, 281474976645120
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%my = and i64 %y, -281474976645121
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%r = or i64 %mx, %my
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ret i64 %r
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}
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Should be the same as the previous one.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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define i8 @in8_constmask(i8 %x, i8 %y) {
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; CHECK-NOBMI-LABEL: in8_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: movl %esi, %eax
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; CHECK-NOBMI-NEXT: xorl %esi, %edi
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; CHECK-NOBMI-NEXT: andb $60, %dil
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; CHECK-NOBMI-NEXT: xorb %dil, %al
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; CHECK-NOBMI-NEXT: # kill: def $al killed $al killed $eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in8_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: movl %esi, %eax
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; CHECK-BMI-NEXT: xorl %esi, %edi
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; CHECK-BMI-NEXT: andb $60, %dil
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; CHECK-BMI-NEXT: xorb %dil, %al
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; CHECK-BMI-NEXT: # kill: def $al killed $al killed $eax
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; CHECK-BMI-NEXT: retq
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%n0 = xor i8 %x, %y
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%n1 = and i8 %n0, 60
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%r = xor i8 %n1, %y
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ret i8 %r
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}
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define i16 @in16_constmask(i16 %x, i16 %y) {
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; CHECK-NOBMI-LABEL: in16_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: movl %edi, %eax
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: andl $4080, %eax # imm = 0xFF0
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: # kill: def $ax killed $ax killed $eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in16_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: movl %edi, %eax
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: andl $4080, %eax # imm = 0xFF0
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: # kill: def $ax killed $ax killed $eax
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; CHECK-BMI-NEXT: retq
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%n0 = xor i16 %x, %y
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%n1 = and i16 %n0, 4080
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%r = xor i16 %n1, %y
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ret i16 %r
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}
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define i32 @in32_constmask(i32 %x, i32 %y) {
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; CHECK-NOBMI-LABEL: in32_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: movl %edi, %eax
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in32_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: movl %edi, %eax
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: retq
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%n0 = xor i32 %x, %y
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%n1 = and i32 %n0, 16776960
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%r = xor i32 %n1, %y
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ret i32 %r
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}
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define i64 @in64_constmask(i64 %x, i64 %y) {
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; CHECK-NOBMI-LABEL: in64_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: xorq %rsi, %rdi
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; CHECK-NOBMI-NEXT: movabsq $281474976645120, %rax # imm = 0xFFFFFFFF0000
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; CHECK-NOBMI-NEXT: andq %rdi, %rax
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; CHECK-NOBMI-NEXT: xorq %rsi, %rax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in64_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: xorq %rsi, %rdi
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; CHECK-BMI-NEXT: movabsq $281474976645120, %rax # imm = 0xFFFFFFFF0000
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; CHECK-BMI-NEXT: andq %rdi, %rax
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; CHECK-BMI-NEXT: xorq %rsi, %rax
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; CHECK-BMI-NEXT: retq
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%n0 = xor i64 %x, %y
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%n1 = and i64 %n0, 281474976645120
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%r = xor i64 %n1, %y
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ret i64 %r
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}
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; ============================================================================ ;
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; Constant Commutativity tests.
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; ============================================================================ ;
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define i32 @in_constmask_commutativity_0_1(i32 %x, i32 %y) {
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; CHECK-NOBMI-LABEL: in_constmask_commutativity_0_1:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: movl %edi, %eax
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in_constmask_commutativity_0_1:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: movl %edi, %eax
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: retq
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%n0 = xor i32 %x, %y
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%n1 = and i32 %n0, 16776960
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%r = xor i32 %y, %n1 ; swapped
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ret i32 %r
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}
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define i32 @in_constmask_commutativity_1_0(i32 %x, i32 %y) {
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; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_0:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: movl %esi, %eax
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; CHECK-NOBMI-NEXT: xorl %edi, %eax
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; CHECK-NOBMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-NOBMI-NEXT: xorl %edi, %eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in_constmask_commutativity_1_0:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: movl %esi, %eax
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; CHECK-BMI-NEXT: xorl %edi, %eax
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; CHECK-BMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-BMI-NEXT: xorl %edi, %eax
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; CHECK-BMI-NEXT: retq
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%n0 = xor i32 %x, %y
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%n1 = and i32 %n0, 16776960
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%r = xor i32 %n1, %x ; %x instead of %y
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ret i32 %r
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}
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define i32 @in_constmask_commutativity_1_1(i32 %x, i32 %y) {
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; CHECK-NOBMI-LABEL: in_constmask_commutativity_1_1:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: movl %esi, %eax
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; CHECK-NOBMI-NEXT: xorl %edi, %eax
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; CHECK-NOBMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-NOBMI-NEXT: xorl %edi, %eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in_constmask_commutativity_1_1:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: movl %esi, %eax
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; CHECK-BMI-NEXT: xorl %edi, %eax
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; CHECK-BMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-BMI-NEXT: xorl %edi, %eax
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; CHECK-BMI-NEXT: retq
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%n0 = xor i32 %x, %y
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%n1 = and i32 %n0, 16776960
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%r = xor i32 %x, %n1 ; swapped, %x instead of %y
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ret i32 %r
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}
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; ============================================================================ ;
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; Y is an 'and' too.
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; ============================================================================ ;
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define i32 @in_complex_y0_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
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; CHECK-NOBMI-LABEL: in_complex_y0_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: movl %edi, %eax
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; CHECK-NOBMI-NEXT: andl %edx, %esi
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in_complex_y0_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: movl %edi, %eax
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; CHECK-BMI-NEXT: andl %edx, %esi
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: retq
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%y = and i32 %y_hi, %y_low
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%n0 = xor i32 %x, %y
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%n1 = and i32 %n0, 16776960
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%r = xor i32 %n1, %y
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ret i32 %r
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}
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define i32 @in_complex_y1_constmask(i32 %x, i32 %y_hi, i32 %y_low) {
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; CHECK-NOBMI-LABEL: in_complex_y1_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: movl %edi, %eax
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; CHECK-NOBMI-NEXT: andl %edx, %esi
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-NOBMI-NEXT: xorl %esi, %eax
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in_complex_y1_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: movl %edi, %eax
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; CHECK-BMI-NEXT: andl %edx, %esi
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
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; CHECK-BMI-NEXT: xorl %esi, %eax
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; CHECK-BMI-NEXT: retq
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%y = and i32 %y_hi, %y_low
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%n0 = xor i32 %x, %y
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%n1 = and i32 %n0, 16776960
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%r = xor i32 %y, %n1
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ret i32 %r
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}
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; ============================================================================ ;
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; Negative tests. Should not be folded.
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; ============================================================================ ;
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; Multi-use tests.
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declare void @use32(i32) nounwind
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define i32 @in_multiuse_A_constmask(i32 %x, i32 %y, i32 %z) nounwind {
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; CHECK-NOBMI-LABEL: in_multiuse_A_constmask:
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; CHECK-NOBMI: # %bb.0:
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; CHECK-NOBMI-NEXT: pushq %rbp
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; CHECK-NOBMI-NEXT: pushq %rbx
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; CHECK-NOBMI-NEXT: pushq %rax
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; CHECK-NOBMI-NEXT: movl %esi, %ebx
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; CHECK-NOBMI-NEXT: movl %edi, %ebp
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; CHECK-NOBMI-NEXT: xorl %esi, %ebp
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; CHECK-NOBMI-NEXT: andl $16776960, %ebp # imm = 0xFFFF00
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; CHECK-NOBMI-NEXT: movl %ebp, %edi
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; CHECK-NOBMI-NEXT: callq use32
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; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
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; CHECK-NOBMI-NEXT: movl %ebp, %eax
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; CHECK-NOBMI-NEXT: addq $8, %rsp
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; CHECK-NOBMI-NEXT: popq %rbx
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; CHECK-NOBMI-NEXT: popq %rbp
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; CHECK-NOBMI-NEXT: retq
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;
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; CHECK-BMI-LABEL: in_multiuse_A_constmask:
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; CHECK-BMI: # %bb.0:
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; CHECK-BMI-NEXT: pushq %rbp
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; CHECK-BMI-NEXT: pushq %rbx
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; CHECK-BMI-NEXT: pushq %rax
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; CHECK-BMI-NEXT: movl %esi, %ebx
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; CHECK-BMI-NEXT: movl %edi, %ebp
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; CHECK-BMI-NEXT: xorl %esi, %ebp
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; CHECK-BMI-NEXT: andl $16776960, %ebp # imm = 0xFFFF00
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; CHECK-BMI-NEXT: movl %ebp, %edi
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; CHECK-BMI-NEXT: callq use32
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; CHECK-BMI-NEXT: xorl %ebx, %ebp
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; CHECK-BMI-NEXT: movl %ebp, %eax
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; CHECK-BMI-NEXT: addq $8, %rsp
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; CHECK-BMI-NEXT: popq %rbx
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; CHECK-BMI-NEXT: popq %rbp
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; CHECK-BMI-NEXT: retq
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%n0 = xor i32 %x, %y
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%n1 = and i32 %n0, 16776960
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call void @use32(i32 %n1)
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%r = xor i32 %n1, %y
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ret i32 %r
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}
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define i32 @in_multiuse_B_constmask(i32 %x, i32 %y, i32 %z) nounwind {
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; CHECK-NOBMI-LABEL: in_multiuse_B_constmask:
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; CHECK-NOBMI: # %bb.0:
|
|
; CHECK-NOBMI-NEXT: pushq %rbp
|
|
; CHECK-NOBMI-NEXT: pushq %rbx
|
|
; CHECK-NOBMI-NEXT: pushq %rax
|
|
; CHECK-NOBMI-NEXT: movl %esi, %ebx
|
|
; CHECK-NOBMI-NEXT: xorl %esi, %edi
|
|
; CHECK-NOBMI-NEXT: movl %edi, %ebp
|
|
; CHECK-NOBMI-NEXT: andl $16776960, %ebp # imm = 0xFFFF00
|
|
; CHECK-NOBMI-NEXT: callq use32
|
|
; CHECK-NOBMI-NEXT: xorl %ebx, %ebp
|
|
; CHECK-NOBMI-NEXT: movl %ebp, %eax
|
|
; CHECK-NOBMI-NEXT: addq $8, %rsp
|
|
; CHECK-NOBMI-NEXT: popq %rbx
|
|
; CHECK-NOBMI-NEXT: popq %rbp
|
|
; CHECK-NOBMI-NEXT: retq
|
|
;
|
|
; CHECK-BMI-LABEL: in_multiuse_B_constmask:
|
|
; CHECK-BMI: # %bb.0:
|
|
; CHECK-BMI-NEXT: pushq %rbp
|
|
; CHECK-BMI-NEXT: pushq %rbx
|
|
; CHECK-BMI-NEXT: pushq %rax
|
|
; CHECK-BMI-NEXT: movl %esi, %ebx
|
|
; CHECK-BMI-NEXT: xorl %esi, %edi
|
|
; CHECK-BMI-NEXT: movl %edi, %ebp
|
|
; CHECK-BMI-NEXT: andl $16776960, %ebp # imm = 0xFFFF00
|
|
; CHECK-BMI-NEXT: callq use32
|
|
; CHECK-BMI-NEXT: xorl %ebx, %ebp
|
|
; CHECK-BMI-NEXT: movl %ebp, %eax
|
|
; CHECK-BMI-NEXT: addq $8, %rsp
|
|
; CHECK-BMI-NEXT: popq %rbx
|
|
; CHECK-BMI-NEXT: popq %rbp
|
|
; CHECK-BMI-NEXT: retq
|
|
%n0 = xor i32 %x, %y
|
|
%n1 = and i32 %n0, 16776960
|
|
call void @use32(i32 %n0)
|
|
%r = xor i32 %n1, %y
|
|
ret i32 %r
|
|
}
|
|
|
|
; Various bad variants
|
|
|
|
define i32 @n0_badconstmask(i32 %x, i32 %y) {
|
|
; CHECK-NOBMI-LABEL: n0_badconstmask:
|
|
; CHECK-NOBMI: # %bb.0:
|
|
; CHECK-NOBMI-NEXT: movl %esi, %eax
|
|
; CHECK-NOBMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
|
|
; CHECK-NOBMI-NEXT: andl $-16776960, %eax # imm = 0xFF000100
|
|
; CHECK-NOBMI-NEXT: orl %edi, %eax
|
|
; CHECK-NOBMI-NEXT: retq
|
|
;
|
|
; CHECK-BMI-LABEL: n0_badconstmask:
|
|
; CHECK-BMI: # %bb.0:
|
|
; CHECK-BMI-NEXT: movl %esi, %eax
|
|
; CHECK-BMI-NEXT: andl $16776960, %edi # imm = 0xFFFF00
|
|
; CHECK-BMI-NEXT: andl $-16776960, %eax # imm = 0xFF000100
|
|
; CHECK-BMI-NEXT: orl %edi, %eax
|
|
; CHECK-BMI-NEXT: retq
|
|
%mx = and i32 %x, 16776960
|
|
%my = and i32 %y, -16776960 ; instead of -16776961
|
|
%r = or i32 %mx, %my
|
|
ret i32 %r
|
|
}
|
|
|
|
define i32 @n1_thirdvar_constmask(i32 %x, i32 %y, i32 %z) {
|
|
; CHECK-NOBMI-LABEL: n1_thirdvar_constmask:
|
|
; CHECK-NOBMI: # %bb.0:
|
|
; CHECK-NOBMI-NEXT: movl %edi, %eax
|
|
; CHECK-NOBMI-NEXT: xorl %esi, %eax
|
|
; CHECK-NOBMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
|
|
; CHECK-NOBMI-NEXT: xorl %edx, %eax
|
|
; CHECK-NOBMI-NEXT: retq
|
|
;
|
|
; CHECK-BMI-LABEL: n1_thirdvar_constmask:
|
|
; CHECK-BMI: # %bb.0:
|
|
; CHECK-BMI-NEXT: movl %edi, %eax
|
|
; CHECK-BMI-NEXT: xorl %esi, %eax
|
|
; CHECK-BMI-NEXT: andl $16776960, %eax # imm = 0xFFFF00
|
|
; CHECK-BMI-NEXT: xorl %edx, %eax
|
|
; CHECK-BMI-NEXT: retq
|
|
%n0 = xor i32 %x, %y
|
|
%n1 = and i32 %n0, 16776960
|
|
%r = xor i32 %n1, %z ; instead of %y
|
|
ret i32 %r
|
|
}
|