cc246d4a29
Ensure code extraction for outlining to a function does not create a function with stacksave of caller to restore stack (e.g. tail call).
72 lines
2.5 KiB
LLVM
72 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
|
|
; RUN: opt -S --passes=hotcoldsplit --hotcoldsplit-max-params=1 < %s | FileCheck %s
|
|
|
|
target datalayout = "E-m:a-p:32:32-i64:64-n32"
|
|
|
|
define void @foo(i32 %cond) {
|
|
; CHECK-LABEL: define void @foo(
|
|
; CHECK-SAME: i32 [[COND:%.*]]) {
|
|
; CHECK-NEXT: [[ENTRY:.*:]]
|
|
; CHECK-NEXT: [[COND_ADDR:%.*]] = alloca i32, align 4
|
|
; CHECK-NEXT: store i32 [[COND]], ptr [[COND_ADDR]], align 4
|
|
; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[COND_ADDR]], align 4
|
|
; CHECK-NEXT: [[STKS:%.*]] = tail call ptr @llvm.stacksave.p0()
|
|
; CHECK-NEXT: [[TOBOOL:%.*]] = icmp ne i32 [[TMP0]], 0
|
|
; CHECK-NEXT: br i1 [[TOBOOL]], label %[[IF_THEN:.*]], label %[[IF_END2:.*]]
|
|
; CHECK: [[IF_THEN]]:
|
|
; CHECK-NEXT: [[TMP1:%.*]] = load i32, ptr [[COND_ADDR]], align 4
|
|
; CHECK-NEXT: call void @sink(i32 [[TMP0]])
|
|
; CHECK-NEXT: [[CMP:%.*]] = icmp sgt i32 [[TMP1]], 10
|
|
; CHECK-NEXT: br i1 [[CMP]], label %[[IF_THEN1:.*]], label %[[IF_ELSE:.*]]
|
|
; CHECK: [[IF_THEN1]]:
|
|
; CHECK-NEXT: call void @sideeffect(i32 2)
|
|
; CHECK-NEXT: br label %[[IF_END:.*]]
|
|
; CHECK: [[IF_ELSE]]:
|
|
; CHECK-NEXT: call void @sink(i32 0)
|
|
; CHECK-NEXT: call void @sideeffect(i32 0)
|
|
; CHECK-NEXT: call void @llvm.stackrestore.p0(ptr [[STKS]])
|
|
; CHECK-NEXT: br label %[[IF_END]]
|
|
; CHECK: [[IF_END]]:
|
|
; CHECK-NEXT: br label %[[IF_END2]]
|
|
; CHECK: [[IF_END2]]:
|
|
; CHECK-NEXT: call void @sideeffect(i32 1)
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
entry:
|
|
%cond.addr = alloca i32
|
|
store i32 %cond, ptr %cond.addr
|
|
%0 = load i32, ptr %cond.addr
|
|
%stks = tail call ptr @llvm.stacksave.p0()
|
|
%tobool = icmp ne i32 %0, 0
|
|
br i1 %tobool, label %if.then, label %if.end2
|
|
|
|
if.then: ; preds = %entry
|
|
%1 = load i32, ptr %cond.addr
|
|
call void @sink(i32 %0)
|
|
%cmp = icmp sgt i32 %1, 10
|
|
br i1 %cmp, label %if.then1, label %if.else
|
|
|
|
if.then1: ; preds = %if.then
|
|
call void @sideeffect(i32 2)
|
|
br label %if.end
|
|
|
|
if.else: ; preds = %if.then
|
|
call void @sink(i32 0)
|
|
call void @sideeffect(i32 0)
|
|
call void @llvm.stackrestore.p0(ptr %stks)
|
|
br label %if.end
|
|
|
|
|
|
if.end: ; preds = %if.else, %if.then1
|
|
br label %if.end2
|
|
|
|
if.end2: ; preds = %entry
|
|
call void @sideeffect(i32 1)
|
|
ret void
|
|
}
|
|
|
|
|
|
declare void @sideeffect(i32)
|
|
|
|
declare void @sink(i32) cold
|