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llvm-mirror/test/CodeGen/ARM/disable-fp-elim.ll
Akira Hatanaka 626316f0c3 Stop resetting NoFramePointerElim in TargetMachine::resetTargetOptions.
This is part of the work to remove TargetMachine::resetTargetOptions.

In this patch, instead of updating global variable NoFramePointerElim in
resetTargetOptions, its use in DisableFramePointerElim is replaced with a call
to TargetFrameLowering::noFramePointerElim. This function determines on a
per-function basis if frame pointer elimination should be disabled.

There is no change in functionality except that cl:opt option "disable-fp-elim"
can now override function attribute "no-frame-pointer-elim". 

llvm-svn: 238080
2015-05-23 01:14:08 +00:00

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1.0 KiB
LLVM

; RUN: llc < %s -mtriple armv7-none-linux-gnueabi -O1 | FileCheck %s --check-prefix=DISABLE-FP-ELIM
; RUN: llc < %s -mtriple armv7-none-linux-gnueabi -disable-fp-elim -O1 | FileCheck %s --check-prefix=DISABLE-FP-ELIM
; RUN: llc < %s -mtriple armv7-none-linux-gnueabi -disable-fp-elim=false -O1 | FileCheck %s --check-prefix=ENABLE-FP-ELIM
; RUN: llc < %s -mtriple armv7-none-linux-gnueabi -disable-fp-elim=false -O0 | FileCheck %s --check-prefix=DISABLE-FP-ELIM
; Check that command line option "-disable-fp-elim" overrides function attribute
; "no-frame-pointer-elim". Also, check frame pointer elimination is disabled
; when fast-isel is used.
; ENABLE-FP-ELIM-NOT: .setfp
; DISABLE-FP-ELIM: .setfp r11, sp
define i32 @foo1(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e) #0 {
entry:
%call = tail call i32 @foo2(i32 %a)
%add = add i32 %c, %b
%add1 = add i32 %add, %d
%add2 = add i32 %add1, %e
%add3 = add i32 %add2, %call
ret i32 %add3
}
declare i32 @foo2(i32)
attributes #0 = { nounwind "no-frame-pointer-elim"="true" }