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llvm/0001-SystemZ-Use-LA-instead-of-AGR-in-eliminateFrameIndex.patch

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Merged update from upstream sources This is an automated DistroBaker update from upstream sources. If you do not know what this is about or would like to opt out, contact the OSCI team. Source: https://src.fedoraproject.org/rpms/llvm.git#051ec63e7b6d93ae4b8c807f7d067aa5cabf0c5d
2020-11-05 22:53:42 +00:00
From d851495f2fe614c4c860bda1bd3c80bfbe48360b Mon Sep 17 00:00:00 2001
From: Jonas Paulsson <paulsson@linux.vnet.ibm.com>
Date: Thu, 8 Oct 2020 13:18:29 +0200
Subject: [PATCH] [SystemZ] Use LA instead of AGR in eliminateFrameIndex().
Since AGR clobbers CC it should not be used here.
Fixes https://bugs.llvm.org/show_bug.cgi?id=47736.
Review: Ulrich Weigand
Differential Revision: https://reviews.llvm.org/D89034
---
.../Target/SystemZ/SystemZRegisterInfo.cpp | 4 +--
llvm/test/CodeGen/SystemZ/frame-14.ll | 26 +++++++++----------
llvm/test/CodeGen/SystemZ/frame-16.ll | 4 +--
3 files changed, 17 insertions(+), 17 deletions(-)
diff --git a/llvm/lib/Target/SystemZ/SystemZRegisterInfo.cpp b/llvm/lib/Target/SystemZ/SystemZRegisterInfo.cpp
index 53b06c6e7e6d..88212e52460f 100644
--- a/llvm/lib/Target/SystemZ/SystemZRegisterInfo.cpp
+++ b/llvm/lib/Target/SystemZ/SystemZRegisterInfo.cpp
@@ -322,8 +322,8 @@ SystemZRegisterInfo::eliminateFrameIndex(MachineBasicBlock::iterator MI,
// Load the high offset into the scratch register and use it as
// an index.
TII->loadImmediate(MBB, MI, ScratchReg, HighOffset);
- BuildMI(MBB, MI, DL, TII->get(SystemZ::AGR),ScratchReg)
- .addReg(ScratchReg, RegState::Kill).addReg(BasePtr);
+ BuildMI(MBB, MI, DL, TII->get(SystemZ::LA), ScratchReg)
+ .addReg(BasePtr, RegState::Kill).addImm(0).addReg(ScratchReg);
}
// Use the scratch register as the base. It then dies here.
diff --git a/llvm/test/CodeGen/SystemZ/frame-14.ll b/llvm/test/CodeGen/SystemZ/frame-14.ll
index e70731249b42..193ff81123c5 100644
--- a/llvm/test/CodeGen/SystemZ/frame-14.ll
+++ b/llvm/test/CodeGen/SystemZ/frame-14.ll
@@ -85,13 +85,13 @@ define void @f3() {
define void @f4() {
; CHECK-NOFP-LABEL: f4:
; CHECK-NOFP: llilh %r1, 8
-; CHECK-NOFP: agr %r1, %r15
+; CHECK-NOFP: la %r1, 0(%r1,%r15)
; CHECK-NOFP: mvi 0(%r1), 42
; CHECK-NOFP: br %r14
;
; CHECK-FP-LABEL: f4:
; CHECK-FP: llilh %r1, 8
-; CHECK-FP: agr %r1, %r11
+; CHECK-FP: la %r1, 0(%r1,%r11)
; CHECK-FP: mvi 0(%r1), 42
; CHECK-FP: br %r14
%region1 = alloca [524104 x i8], align 8
@@ -108,13 +108,13 @@ define void @f4() {
define void @f5() {
; CHECK-NOFP-LABEL: f5:
; CHECK-NOFP: llilh %r1, 8
-; CHECK-NOFP: agr %r1, %r15
+; CHECK-NOFP: la %r1, 0(%r1,%r15)
; CHECK-NOFP: mvi 4095(%r1), 42
; CHECK-NOFP: br %r14
;
; CHECK-FP-LABEL: f5:
; CHECK-FP: llilh %r1, 8
-; CHECK-FP: agr %r1, %r11
+; CHECK-FP: la %r1, 0(%r1,%r11)
; CHECK-FP: mvi 4095(%r1), 42
; CHECK-FP: br %r14
%region1 = alloca [524104 x i8], align 8
@@ -130,13 +130,13 @@ define void @f5() {
define void @f6() {
; CHECK-NOFP-LABEL: f6:
; CHECK-NOFP: llilh %r1, 8
-; CHECK-NOFP: agr %r1, %r15
+; CHECK-NOFP: la %r1, 0(%r1,%r15)
; CHECK-NOFP: mviy 4096(%r1), 42
; CHECK-NOFP: br %r14
;
; CHECK-FP-LABEL: f6:
; CHECK-FP: llilh %r1, 8
-; CHECK-FP: agr %r1, %r11
+; CHECK-FP: la %r1, 0(%r1,%r11)
; CHECK-FP: mviy 4096(%r1), 42
; CHECK-FP: br %r14
%region1 = alloca [524104 x i8], align 8
@@ -155,13 +155,13 @@ define void @f6() {
define void @f7() {
; CHECK-NOFP-LABEL: f7:
; CHECK-NOFP: llilh %r1, 23
-; CHECK-NOFP: agr %r1, %r15
+; CHECK-NOFP: la %r1, 0(%r1,%r15)
; CHECK-NOFP: mviy 65535(%r1), 42
; CHECK-NOFP: br %r14
;
; CHECK-FP-LABEL: f7:
; CHECK-FP: llilh %r1, 23
-; CHECK-FP: agr %r1, %r11
+; CHECK-FP: la %r1, 0(%r1,%r11)
; CHECK-FP: mviy 65535(%r1), 42
; CHECK-FP: br %r14
%region1 = alloca [1048400 x i8], align 8
@@ -178,13 +178,13 @@ define void @f7() {
define void @f8() {
; CHECK-NOFP-LABEL: f8:
; CHECK-NOFP: llilh %r1, 24
-; CHECK-NOFP: agr %r1, %r15
+; CHECK-NOFP: la %r1, 0(%r1,%r15)
; CHECK-NOFP: mvi 7(%r1), 42
; CHECK-NOFP: br %r14
;
; CHECK-FP-LABEL: f8:
; CHECK-FP: llilh %r1, 24
-; CHECK-FP: agr %r1, %r11
+; CHECK-FP: la %r1, 0(%r1,%r11)
; CHECK-FP: mvi 7(%r1), 42
; CHECK-FP: br %r14
%region1 = alloca [1048408 x i8], align 8
@@ -233,7 +233,7 @@ define void @f10(i32 *%vptr) {
; CHECK-NOFP-LABEL: f10:
; CHECK-NOFP: stg [[REGISTER:%r[1-9][0-4]?]], [[OFFSET:160|168]](%r15)
; CHECK-NOFP: llilh [[REGISTER]], 8
-; CHECK-NOFP: agr [[REGISTER]], %r15
+; CHECK-NOFP: la [[REGISTER]], 0([[REGISTER]],%r15)
; CHECK-NOFP: mvi 0([[REGISTER]]), 42
; CHECK-NOFP: lg [[REGISTER]], [[OFFSET]](%r15)
; CHECK-NOFP: br %r14
@@ -241,7 +241,7 @@ define void @f10(i32 *%vptr) {
; CHECK-FP-LABEL: f10:
; CHECK-FP: stg [[REGISTER:%r[1-9][0-4]?]], [[OFFSET:160|168]](%r11)
; CHECK-FP: llilh [[REGISTER]], 8
-; CHECK-FP: agr [[REGISTER]], %r11
+; CHECK-FP: la [[REGISTER]], 0([[REGISTER]],%r11)
; CHECK-FP: mvi 0([[REGISTER]]), 42
; CHECK-FP: lg [[REGISTER]], [[OFFSET]](%r11)
; CHECK-FP: br %r14
@@ -273,7 +273,7 @@ define void @f11(i32 *%vptr) {
; CHECK-NOFP: stmg %r6, %r15,
; CHECK-NOFP: stg [[REGISTER:%r[1-9][0-4]?]], [[OFFSET:160|168]](%r15)
; CHECK-NOFP: llilh [[REGISTER]], 8
-; CHECK-NOFP: agr [[REGISTER]], %r15
+; CHECK-NOFP: la [[REGISTER]], 0([[REGISTER]],%r15)
; CHECK-NOFP: mvi 0([[REGISTER]]), 42
; CHECK-NOFP: lg [[REGISTER]], [[OFFSET]](%r15)
; CHECK-NOFP: lmg %r6, %r15,
diff --git a/llvm/test/CodeGen/SystemZ/frame-16.ll b/llvm/test/CodeGen/SystemZ/frame-16.ll
index ae8a041ae110..a95c58207afb 100644
--- a/llvm/test/CodeGen/SystemZ/frame-16.ll
+++ b/llvm/test/CodeGen/SystemZ/frame-16.ll
@@ -311,13 +311,13 @@ define void @f11(i32 *%vptr, i8 %byte) {
define void @f12(i8 %byte, i64 %index) {
; CHECK-NOFP-LABEL: f12:
; CHECK-NOFP: llilh %r1, 8
-; CHECK-NOFP: agr %r1, %r15
+; CHECK-NOFP: la %r1, 0(%r1,%r15)
; CHECK-NOFP: stc %r2, 0(%r3,%r1)
; CHECK-NOFP: br %r14
;
; CHECK-FP-LABEL: f12:
; CHECK-FP: llilh %r1, 8
-; CHECK-FP: agr %r1, %r11
+; CHECK-FP: la %r1, 0(%r1,%r11)
; CHECK-FP: stc %r2, 0(%r3,%r1)
; CHECK-FP: br %r14
%region1 = alloca [524104 x i8], align 8
--
2.26.2
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