1 ; RUN: llc -mtriple arm-linux-gnu -debug-entry-values %s -o - -stop-before=finalize-isel | FileCheck %s
2 ; Verify that Selection DAG knows how to recognize simple function parameter forwarding registers.
4 ; extern int fn1(int,int,int);
5 ; int fn2(int a, int b, int c) {
6 ; int local = fn1(a+b, c, 10);
11 ; clang -g -O2 -target arm-linux-gnu -S -emit-llvm %s
13 ; CHECK-NEXT: - { bb: {{.*}}, offset: {{.*}}, fwdArgRegs:
14 ; CHECK-NEXT: - { arg: 0, reg: '$r0' }
15 ; CHECK-NEXT: - { arg: 1, reg: '$r1' }
16 ; CHECK-NEXT: - { arg: 2, reg: '$r2' } }
18 ; ModuleID = 'call-site-info-output.c'
19 source_filename = "call-site-info-output.c"
20 target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
21 target triple = "armv4t-unknown-linux-gnu"
23 ; Function Attrs: nounwind
24 define dso_local arm_aapcscc i32 @fn2(i32 %a, i32 %b, i32 %c) {
26 %add = add nsw i32 %b, %a
27 %call = tail call arm_aapcscc i32 @fn1(i32 %add, i32 %c, i32 10)
28 %cmp = icmp sgt i32 %call, 10
29 %add1 = select i1 %cmp, i32 %c, i32 0
30 %retval.0 = add nsw i32 %add1, %call
34 declare dso_local arm_aapcscc i32 @fn1(i32, i32, i32) local_unnamed_addr
36 ; Function Attrs: nounwind readnone speculatable willreturn
37 declare void @llvm.dbg.value(metadata, metadata, metadata)
41 !0 = !{!"clang version 10.0.0"}