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| # RUN: llc -mtriple=x86_64-linux-gnu -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=X64
# RUN: llc -mtriple=i386-linux-gnu -run-pass=instruction-select -verify-machineinstrs %s -o - | FileCheck %s --check-prefix=CHECK --check-prefix=X32
--- |
define i32 @test(i32 %a) {
entry:
%cmp = trunc i32 %a to i1
br i1 %cmp, label %true, label %false
true: ; preds = %entry
ret i32 0
false: ; preds = %entry
ret i32 1
}
...
---
name: test
# CHECK-LABEL: name: test
alignment: 16
legalized: true
regBankSelected: true
registers:
- { id: 0, class: gpr, preferred-register: '' }
- { id: 1, class: gpr, preferred-register: '' }
- { id: 2, class: gpr, preferred-register: '' }
- { id: 3, class: gpr, preferred-register: '' }
# X64: %0:gr32 = COPY $edi
# X32: %0:gr32_abcd = COPY $edi
# CHECK-NEXT: %2:gr32 = MOV32r0 implicit-def $eflags
# CHECK-NEXT: %3:gr32 = MOV32ri 1
# CHECK-NEXT: %1:gr8 = COPY %0.sub_8bit
# CHECK-NEXT: TEST8ri %1, 1, implicit-def $eflags
# CHECK-NEXT: JCC_1 %[[TRUE:bb.[0-9]+]], 5, implicit $eflags
# CHECK-NEXT: JMP_1 %[[FALSE:bb.[0-9]+]]
# CHECK: [[TRUE]].{{[a-zA-Z0-9]+}}:
# CHECK-NEXT: $eax = COPY %2
# CHECK-NEXT: RET 0, implicit $eax
# CHECK: [[FALSE]].{{[a-zA-Z0-9]+}}:
# CHECK-NEXT: $eax = COPY %3
# CHECK-NEXT: RET 0, implicit $eax
body: |
bb.1.entry:
successors: %bb.2(0x40000000), %bb.3(0x40000000)
liveins: $edi
%0(s32) = COPY $edi
%2(s32) = G_CONSTANT i32 0
%3(s32) = G_CONSTANT i32 1
%1(s1) = G_TRUNC %0(s32)
G_BRCOND %1(s1), %bb.2
G_BR %bb.3
bb.2.true:
$eax = COPY %2(s32)
RET 0, implicit $eax
bb.3.false:
$eax = COPY %3(s32)
RET 0, implicit $eax
...
|