xref: /llvm-project/llvm/test/CodeGen/X86/nosse-varargs.ll (revision 2f448bf509432c1a19ec46ab8cbc7353c03c6280)
1; RUN: llc < %s -mattr=-sse | FileCheck %s -check-prefix=NOSSE
2; RUN: llc < %s | FileCheck %s -check-prefix=YESSSE
3; PR3403
4target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
5target triple = "x86_64-unknown-linux-gnu"
6	%struct.__va_list_tag = type { i32, i32, ptr, ptr }
7
8; NOSSE-NOT: xmm
9; YESSSE: xmm
10define i32 @foo(float %a, ptr nocapture %fmt, ...) nounwind {
11entry:
12	%ap = alloca [1 x %struct.__va_list_tag], align 8		; <ptr> [#uses=4]
13	call void @llvm.va_start(ptr %ap)
14	%0 = getelementptr [1 x %struct.__va_list_tag], ptr %ap, i64 0, i64 0, i32 0		; <ptr> [#uses=2]
15	%1 = load i32, ptr %0, align 8		; <i32> [#uses=3]
16	%2 = icmp ult i32 %1, 48		; <i1> [#uses=1]
17	br i1 %2, label %bb, label %bb3
18
19bb:		; preds = %entry
20	%3 = getelementptr [1 x %struct.__va_list_tag], ptr %ap, i64 0, i64 0, i32 3		; <ptr> [#uses=1]
21	%4 = load ptr, ptr %3, align 8		; <ptr> [#uses=1]
22	%5 = inttoptr i32 %1 to ptr		; <ptr> [#uses=1]
23	%6 = ptrtoint ptr %5 to i64		; <i64> [#uses=1]
24	%ctg2 = getelementptr i8, ptr %4, i64 %6		; <ptr> [#uses=1]
25	%7 = add i32 %1, 8		; <i32> [#uses=1]
26	store i32 %7, ptr %0, align 8
27	br label %bb4
28
29bb3:		; preds = %entry
30	%8 = getelementptr [1 x %struct.__va_list_tag], ptr %ap, i64 0, i64 0, i32 2		; <ptr> [#uses=2]
31	%9 = load ptr, ptr %8, align 8		; <ptr> [#uses=2]
32	%10 = getelementptr i8, ptr %9, i64 8		; <ptr> [#uses=1]
33	store ptr %10, ptr %8, align 8
34	br label %bb4
35
36bb4:		; preds = %bb3, %bb
37	%addr.0.0 = phi ptr [ %ctg2, %bb ], [ %9, %bb3 ]		; <ptr> [#uses=1]
38	%11 = load i32, ptr %addr.0.0, align 4		; <i32> [#uses=1]
39	call void @llvm.va_end(ptr %ap)
40	ret i32 %11
41}
42
43declare void @llvm.va_start(ptr) nounwind
44
45declare void @llvm.va_end(ptr) nounwind
46