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| author | Hans Wennborg <hans@hanshq.net> | 2018-02-02 13:56:46 +0000 |
|---|---|---|
| committer | Hans Wennborg <hans@hanshq.net> | 2018-02-02 13:56:46 +0000 |
| commit | 816adbd1b4a9e874953958d839951279dfbce5b7 (patch) | |
| tree | 64c997ab02aeb13139d755d52ef1fc7ab277cabf /test | |
| parent | abf249d90baf93a6f18f03a9f60007d47b65c697 (diff) | |
Merging r323643:
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r323643 | jdevlieghere | 2018-01-29 13:10:32 +0100 (Mon, 29 Jan 2018) | 16 lines
[Sparc] Account for bias in stack readjustment
Summary: This was broken long ago in D12208, which failed to account for
the fact that 64-bit SPARC uses a stack bias of 2047, and it is the
*unbiased* value which should be aligned, not the biased one. This was
seen to be an issue with Rust.
Patch by: jrtc27 (James Clarke)
Reviewers: jyknight, venkatra
Reviewed By: jyknight
Subscribers: jacob_hansen, JDevlieghere, fhahn, fedor.sergeev, llvm-commits
Differential Revision: https://reviews.llvm.org/D39425
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/branches/release_60@324090 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/SPARC/stack-align.ll | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/test/CodeGen/SPARC/stack-align.ll b/test/CodeGen/SPARC/stack-align.ll index b152e6a038f..6516fb78e48 100644 --- a/test/CodeGen/SPARC/stack-align.ll +++ b/test/CodeGen/SPARC/stack-align.ll @@ -1,4 +1,5 @@ -; RUN: llc -march=sparc < %s | FileCheck %s +; RUN: llc -march=sparc < %s | FileCheck %s --check-prefixes=CHECK,CHECK32 +; RUN: llc -march=sparcv9 < %s | FileCheck %s --check-prefixes=CHECK,CHECK64 declare void @stack_realign_helper(i32 %a, i32* %b) ;; This is a function where we have a local variable of 64-byte @@ -7,10 +8,15 @@ declare void @stack_realign_helper(i32 %a, i32* %b) ;; the argument is accessed via frame pointer not stack pointer (to %o0). ;; CHECK-LABEL: stack_realign: -;; CHECK: andn %sp, 63, %sp -;; CHECK-NEXT: ld [%fp+92], %o0 -;; CHECK-NEXT: call stack_realign_helper -;; CHECK-NEXT: add %sp, 128, %o1 +;; CHECK32: andn %sp, 63, %sp +;; CHECK32-NEXT: ld [%fp+92], %o0 +;; CHECK64: add %sp, 2047, %g1 +;; CHECK64-NEXT: andn %g1, 63, %g1 +;; CHECK64-NEXT: add %g1, -2047, %sp +;; CHECK64-NEXT: ld [%fp+2227], %o0 +;; CHECK-NEXT: call stack_realign_helper +;; CHECK32-NEXT: add %sp, 128, %o1 +;; CHECK64-NEXT: add %sp, 2239, %o1 define void @stack_realign(i32 %a, i32 %b, i32 %c, i32 %d, i32 %e, i32 %f, i32 %g) { entry: |