https://llvm.org/bugs/show_bug.cgi?id=26303
Bug ID: 26303
Summary: [X86] Reuse stack slots for more tail calls
Product: libraries
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P
Component: Backend: X86
Assignee: unassignedb...@nondot.org
Reporter: h...@chromium.org
CC: llvm-bugs@lists.llvm.org
Blocks: 26299
Classification: Unclassified
Consider the following code:
int g(int);
int f(int x) {
return g(42);
}
GCC 5.3 will reuse the stack slot for x and tail-call g:
f(int):
movl $42, 4(%esp)
jmp g(int)
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