42 lines
1.4 KiB
LLVM
42 lines
1.4 KiB
LLVM
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; RUN: llc -emit-call-site-info -mtriple arm-linux-gnu -debug-entry-values %s -o - -stop-before=finalize-isel | FileCheck %s
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; Verify that Selection DAG knows how to recognize simple function parameter forwarding registers.
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; Produced from:
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; extern int fn1(int,int,int);
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; int fn2(int a, int b, int c) {
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; int local = fn1(a+b, c, 10);
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; if (local > 10)
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; return local + 10;
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; return local;
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; }
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; clang -g -O2 -target arm-linux-gnu -S -emit-llvm %s
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; CHECK: callSites:
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; CHECK-NEXT: - { bb: {{.*}}, offset: {{.*}}, fwdArgRegs:
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; CHECK-NEXT: - { arg: 0, reg: '$r0' }
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; CHECK-NEXT: - { arg: 1, reg: '$r1' }
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; CHECK-NEXT: - { arg: 2, reg: '$r2' } }
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; ModuleID = 'call-site-info-output.c'
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source_filename = "call-site-info-output.c"
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target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "armv4t-unknown-linux-gnu"
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; Function Attrs: nounwind
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define dso_local arm_aapcscc i32 @fn2(i32 %a, i32 %b, i32 %c) {
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entry:
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%add = add nsw i32 %b, %a
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%call = tail call arm_aapcscc i32 @fn1(i32 %add, i32 %c, i32 10)
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%cmp = icmp sgt i32 %call, 10
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%add1 = select i1 %cmp, i32 %c, i32 0
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%retval.0 = add nsw i32 %add1, %call
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ret i32 %retval.0
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}
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declare dso_local arm_aapcscc i32 @fn1(i32, i32, i32) local_unnamed_addr
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; Function Attrs: nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.ident = !{!0}
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!0 = !{!"clang version 10.0.0"}
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