1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
; RUN: llc -mtriple=x86_64-apple-darwin -print-machineinstrs=expand-isel-pseudos -enable-selectiondag-sp=true %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=DARWIN-SELDAG
; RUN: llc -mtriple=x86_64-apple-darwin -print-machineinstrs=expand-isel-pseudos -enable-selectiondag-sp=false %s -o /dev/null 2>&1 | FileCheck %s --check-prefix=DARWIN-IR
; RUN: llc -mtriple=i386-pc-windows-msvc -print-machineinstrs=expand-isel-pseudos -enable-selectiondag-sp=true %s -o /dev/null 2>&1 | FileCheck %s -check-prefix=MSVC-SELDAG
; RUN: llc -mtriple=i386-pc-windows-msvc -print-machineinstrs=expand-isel-pseudos -enable-selectiondag-sp=false %s -o /dev/null 2>&1 | FileCheck %s -check-prefix=MSVC-IR
; DARWIN-SELDAG: # Machine code for function test_branch_weights:
; DARWIN-SELDAG: successors: %bb.[[SUCCESS:[0-9]+]](0x7ffff800), %bb.[[FAILURE:[0-9]+]]
; DARWIN-SELDAG: bb.[[FAILURE]]{{[0-9a-zA-Z_.]+}}:
; DARWIN-SELDAG: CALL64pcrel32 &__stack_chk_fail
; DARWIN-SELDAG: bb.[[SUCCESS]]{{[0-9a-zA-Z_.]+}}:
; DARWIN-IR: # Machine code for function test_branch_weights:
; DARWIN-IR: successors: %bb.[[SUCCESS:[0-9]+]](0x7fffffff), %bb.[[FAILURE:[0-9]+]]
; DARWIN-IR: bb.[[SUCCESS]]{{[0-9a-zA-Z_.]+}}:
; DARWIN-IR: bb.[[FAILURE]]{{[0-9a-zA-Z_.]+}}:
; DARWIN-IR: CALL64pcrel32 @__stack_chk_fail
; MSVC-SELDAG: # Machine code for function test_branch_weights:
; MSVC-SELDAG: :: (volatile load 4 from @__security_cookie)
; MSVC-SELDAG: (store 4 into stack)
; MSVC-SELDAG: (volatile load 4 from %stack.0.StackGuardSlot)
; MSVC-SELDAG: CALLpcrel32 @__security_check_cookie
; MSVC always uses selection DAG now.
; MSVC-IR: # Machine code for function test_branch_weights:
; MSVC-IR: :: (volatile load 4 from @__security_cookie)
; MSVC-IR: (store 4 into stack)
; MSVC-IR: (volatile load 4 from %stack.0.StackGuardSlot)
; MSVC-IR: CALLpcrel32 @__security_check_cookie
define i32 @test_branch_weights(i32 %n) #0 {
entry:
%a = alloca [128 x i32], align 16
%0 = bitcast [128 x i32]* %a to i8*
call void @llvm.lifetime.start.p0i8(i64 512, i8* %0)
%arraydecay = getelementptr inbounds [128 x i32], [128 x i32]* %a, i64 0, i64 0
call void @foo2(i32* %arraydecay)
%idxprom = sext i32 %n to i64
%arrayidx = getelementptr inbounds [128 x i32], [128 x i32]* %a, i64 0, i64 %idxprom
%1 = load i32, i32* %arrayidx, align 4
call void @llvm.lifetime.end.p0i8(i64 512, i8* %0)
ret i32 %1
}
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
declare void @foo2(i32*)
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
attributes #0 = { sspstrong "stack-protector-buffer-size"="8" }
|
