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
| ; RUN: llc %s -o - | FileCheck %s
target datalayout = "e-m:o-p:32:32-f64:32:64-f80:128-n8:16:32-S128"
target triple = "i386-apple-macosx10.5"
; Check that the merging of SP updates, when LEAs are involved, happen
; correctly.
; CHECK-LABEL: useLEA:
; CHECK: calll _realloc
; Make sure that the offset we get here is 8 + 16.
; We used to have 8 + 1 because we were not reading the right immediate form
; the LEA instruction.
; CHECK-NEXT: leal 24(%esp), %esp
define noalias i8* @useLEA(i8* nocapture %p, i32 %nbytes) #0 {
entry:
%cmp = icmp slt i32 %nbytes, 0
br i1 %cmp, label %cond.end.3, label %cond.false
cond.false: ; preds = %entry
%tobool = icmp ne i32 %nbytes, 0
%cond = select i1 %tobool, i32 %nbytes, i32 1
%call = tail call i8* @realloc(i8* %p, i32 %cond)
br label %cond.end.3
cond.end.3: ; preds = %entry, %cond.false
%cond4 = phi i8* [ %call, %cond.false ], [ null, %entry ]
ret i8* %cond4
}
; Function Attrs: nounwind optsize
declare noalias i8* @realloc(i8* nocapture, i32)
attributes #0 = { nounwind optsize ssp "disable-tail-calls"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "target-features"="+lea-sp" }
|