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llvm-project/llvm/test/CodeGen/ARM/2010-11-29-PrologueBug.ll

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ARM: stop emitting blx instructions for most calls on MachO. I'm really not sure why we were in the first place, it's the linker's job to convert between BL/BLX as necessary. Even worse, using BLX left Thumb calls that could be locally resolved completely unencodable since all offsets to BLX are multiples of 4. rdar://26182344 llvm-svn: 269101
2016-05-11 03:17:47 +08:00
; RUN: llc < %s -mtriple=armv7-apple-ios | FileCheck %s
; RUN: llc < %s -mtriple=thumbv7-apple-ios | FileCheck %s
Mark Darwin call instructions as using "r7" to prevent the frame-register assignment instructions from being moved below / above calls. rdar://8690640 llvm-svn: 120339
2010-11-30 06:43:27 +08:00
; rdar://8690640
Migrate function attribute "no-frame-pointer-elim" to "frame-pointer"="all" as cleanups after D56351
2019-12-25 07:52:21 +08:00
define i32* @t(i32* %x) nounwind "frame-pointer"="all" {
Mark Darwin call instructions as using "r7" to prevent the frame-register assignment instructions from being moved below / above calls. rdar://8690640 llvm-svn: 120339
2010-11-30 06:43:27 +08:00
entry:
ARM: stop emitting blx instructions for most calls on MachO. I'm really not sure why we were in the first place, it's the linker's job to convert between BL/BLX as necessary. Even worse, using BLX left Thumb calls that could be locally resolved completely unencodable since all offsets to BLX are multiples of 4. rdar://26182344 llvm-svn: 269101
2016-05-11 03:17:47 +08:00
; CHECK-LABEL: t:
; CHECK: push
; CHECK: mov r7, sp
; CHECK: bl _foo
; CHECK: bl _foo
; CHECK: bl _foo
; CHECK: pop {r7, pc}
Mark Darwin call instructions as using "r7" to prevent the frame-register assignment instructions from being moved below / above calls. rdar://8690640 llvm-svn: 120339
2010-11-30 06:43:27 +08:00
%0 = tail call i32* @foo(i32* %x) nounwind
%1 = tail call i32* @foo(i32* %0) nounwind
%2 = tail call i32* @foo(i32* %1) nounwind
ret i32* %2
}
declare i32* @foo(i32*)