forked from OSchip/llvm-project
136 lines
3.6 KiB
YAML
136 lines
3.6 KiB
YAML
# RUN: llc -mtriple=x86_64-- -run-pass branch-folder -O3 -o - %s | FileCheck %s
|
|
|
|
---
|
|
name: test1a
|
|
body: |
|
|
; CHECK-LABEL: name: test1a
|
|
; CHECK: bb.0:
|
|
; CHECK: TEST8rr killed renamable $al, renamable $al, implicit-def $eflags
|
|
; CHECK: JCC_1 %bb.2, 5, implicit $eflags
|
|
; CHECK: bb.1:
|
|
; CHECK: successors: %bb.2(0x80000000)
|
|
; CHECK: MOV8mi $r12, 1, $noreg, 0, $noreg, 0
|
|
; CHECK-NOT: RET
|
|
; CHECK: bb.2:
|
|
; CHECK: MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
; CHECK: RET 0
|
|
bb.0:
|
|
TEST8rr killed renamable $al, renamable $al, implicit-def $eflags
|
|
JCC_1 %bb.2, 5, implicit killed $eflags
|
|
|
|
bb.1:
|
|
MOV8mi $r12, 1, $noreg, 0, $noreg, 0
|
|
MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
RET 0
|
|
|
|
bb.2:
|
|
MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
RET 0
|
|
...
|
|
|
|
---
|
|
name: test1b
|
|
body: |
|
|
|
|
; Verify that we get the same rewrites as in test1a when adding some
|
|
; DBG_VALUE instructions in the mix.
|
|
;
|
|
; CHECK-LABEL: name: test1b
|
|
; CHECK: bb.0:
|
|
; CHECK: TEST8rr killed renamable $al, renamable $al, implicit-def $eflags
|
|
; CHECK: JCC_1 %bb.2, 5, implicit $eflags
|
|
; CHECK: bb.1:
|
|
; CHECK: successors: %bb.2(0x80000000)
|
|
; CHECK: MOV8mi $r12, 1, $noreg, 0, $noreg, 0
|
|
; CHECK-NOT: RET
|
|
; CHECK: bb.2:
|
|
; CHECK: DBG_VALUE
|
|
; CHECK: DBG_VALUE
|
|
; CHECK: MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
; CHECK: RET 0
|
|
bb.0:
|
|
TEST8rr killed renamable $al, renamable $al, implicit-def $eflags
|
|
JCC_1 %bb.2, 5, implicit killed $eflags
|
|
|
|
bb.1:
|
|
MOV8mi $r12, 1, $noreg, 0, $noreg, 0
|
|
MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
RET 0
|
|
|
|
bb.2:
|
|
DBG_VALUE
|
|
DBG_VALUE
|
|
MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
RET 0
|
|
...
|
|
|
|
---
|
|
name: test2a
|
|
body: |
|
|
; CFI instruction currently prevents the rewrite here (although technically
|
|
; I suppose that branch folding could let bb.1 fallthrough into bb.2 here).
|
|
;
|
|
; CHECK-LABEL: name: test2a
|
|
; CHECK: bb.0:
|
|
; CHECK: TEST8rr killed renamable $al, renamable $al, implicit-def $eflags
|
|
; CHECK: JCC_1 %bb.2, 5, implicit killed $eflags
|
|
; CHECK: bb.1:
|
|
; CHECK: MOV8mi $r12, 1, $noreg, 0, $noreg, 0
|
|
; CHECK: MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
; CHECK: RET 0
|
|
; CHECK: bb.2:
|
|
; CHECK: CFI_INSTRUCTION def_cfa_offset 8
|
|
; CHECK: MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
; CHECK: RET 0
|
|
bb.0:
|
|
TEST8rr killed renamable $al, renamable $al, implicit-def $eflags
|
|
JCC_1 %bb.2, 5, implicit killed $eflags
|
|
|
|
bb.1:
|
|
MOV8mi $r12, 1, $noreg, 0, $noreg, 0
|
|
MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
RET 0
|
|
|
|
bb.2:
|
|
CFI_INSTRUCTION def_cfa_offset 8
|
|
MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
RET 0
|
|
...
|
|
|
|
---
|
|
name: test2b
|
|
body: |
|
|
; Verify that we get the same rewrites as in test1a when adding some
|
|
; DBG_VALUE instructions in the mix.
|
|
;
|
|
; CHECK-LABEL: name: test2b
|
|
; CHECK: bb.0:
|
|
; CHECK: TEST8rr killed renamable $al, renamable $al, implicit-def $eflags
|
|
; CHECK: JCC_1 %bb.2, 5, implicit killed $eflags
|
|
; CHECK: bb.1:
|
|
; CHECK: MOV8mi $r12, 1, $noreg, 0, $noreg, 0
|
|
; CHECK: MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
; CHECK: RET 0
|
|
; CHECK: bb.2:
|
|
; CHECK: DBG_VALUE
|
|
; CHECK: CFI_INSTRUCTION def_cfa_offset 8
|
|
; CHECK: DBG_VALUE
|
|
; CHECK: MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
; CHECK: RET 0
|
|
bb.0:
|
|
TEST8rr killed renamable $al, renamable $al, implicit-def $eflags
|
|
JCC_1 %bb.2, 5, implicit killed $eflags
|
|
|
|
bb.1:
|
|
MOV8mi $r12, 1, $noreg, 0, $noreg, 0
|
|
MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
RET 0
|
|
|
|
bb.2:
|
|
DBG_VALUE
|
|
CFI_INSTRUCTION def_cfa_offset 8
|
|
DBG_VALUE
|
|
MOV8mi $r13, 1, $noreg, 0, $noreg, 0
|
|
RET 0
|
|
...
|