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
|
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --force-update
; RUN: opt < %s -mtriple=x86_64-unknown-unknown -passes=mergeicmps -verify-dom-info -S 2>&1 | FileCheck %s
; 8-byte int and 8-byte pointer should merge into a 16-byte memcmp.
%struct.outer = type { i64, ptr }
%struct.inner = type { i32, i32, i32 }
; Function Attrs: nounwind uwtable
define i1 @test(ptr align 8 dereferenceable(16) %o1, ptr align 8 dereferenceable(116) %o2) local_unnamed_addr nofree nosync {
; CHECK-LABEL: @test(
; CHECK-NEXT: "entry+if.then":
; CHECK-NEXT: [[MEMCMP:%.*]] = call i32 @memcmp(ptr [[O1:%.*]], ptr [[O2:%.*]], i64 16)
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i32 [[MEMCMP]], 0
; CHECK-NEXT: br label [[IF_END5:%.*]]
; CHECK: if.end5:
; CHECK-NEXT: ret i1 [[TMP2]]
;
entry:
%0 = load i64, ptr %o1, align 8
%1 = load i64, ptr %o2, align 8
%cmp = icmp eq i64 %0, %1
br i1 %cmp, label %if.then, label %if.end5
if.then: ; preds = %entry
%p2 = getelementptr inbounds %struct.outer, ptr %o1, i64 0, i32 1
%2 = load ptr, ptr %p2, align 8
%p22 = getelementptr inbounds %struct.outer, ptr %o2, i64 0, i32 1
%3 = load ptr, ptr %p22, align 8
%cmp3 = icmp eq ptr %2, %3
br label %if.end5
if.end5: ; preds = %if.then, %entry
%rez.0 = phi i1 [ %cmp3, %if.then ], [ false, %entry ]
ret i1 %rez.0
}
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.start.p0(i64, ptr nocapture) #1
; Function Attrs: argmemonly nounwind
declare void @llvm.lifetime.end.p0(i64, ptr nocapture) #1
attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="none" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }
attributes #1 = { argmemonly nounwind }
attributes #2 = { nounwind }
|
