Load folding tail call should not use ebp / rbp after it's popped. PEI

should use esp / rsp to reference frame instead.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102596 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 52 insertions, 0 deletions

diff --git a/test/CodeGen/X86/sibcall-2.ll b/test/CodeGen/X86/sibcall-2.ll
new file mode 100644
index 0000000..f8a7465
--- /dev/null
+++ b/test/CodeGen/X86/sibcall-2.ll
@@ -0,0 +1,52 @@
+; RUN: llc < %s -mtriple=i386-apple-darwin   -disable-fp-elim | FileCheck %s -check-prefix=32
+; RUN: llc < %s -mtriple=x86_64-apple-darwin -disable-fp-elim | FileCheck %s -check-prefix=64
+
+; Tail call should not use ebp / rbp after it's popped. Use esp / rsp.
+
+define void @t1(i8* nocapture %value) nounwind {
+entry:
+; 32: t1:
+; 32: jmpl *4(%esp)
+
+; 64: t1:
+; 64: jmpq *%rdi
+  %0 = bitcast i8* %value to void ()*
+  tail call void %0() nounwind
+  ret void
+}
+
+define void @t2(i32 %a, i8* nocapture %value) nounwind {
+entry:
+; 32: t2:
+; 32: jmpl *8(%esp)
+
+; 64: t2:
+; 64: jmpq *%rsi
+  %0 = bitcast i8* %value to void ()*
+  tail call void %0() nounwind
+  ret void
+}
+
+define void @t3(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i8* nocapture %value) nounwind {
+entry:
+; 32: t3:
+; 32: jmpl *28(%esp)
+
+; 64: t3:
+; 64: jmpq *8(%rsp)
+  %0 = bitcast i8* %value to void ()*
+  tail call void %0() nounwind
+  ret void
+}
+
+define void @t4(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g, i8* nocapture %value) nounwind {
+entry:
+; 32: t4:
+; 32: jmpl *32(%esp)
+
+; 64: t4:
+; 64: jmpq *16(%rsp)
+  %0 = bitcast i8* %value to void ()*
+  tail call void %0() nounwind
+  ret void
+}