[PATCH] D32473: [MSP430] Fix PR32769: Select8 and Select16 need to have SR in Uses.
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Tue Apr 25 17:47:08 PDT 2017
This revision was automatically updated to reflect the committed changes.
Closed by commit rL301372: [MSP430] Fix PR32769: Select8 and Select16 need to have SR in Uses. (authored by dambrouski).
Changed prior to commit:
https://reviews.llvm.org/D32473?vs=96651&id=96661#toc
Repository:
rL LLVM
https://reviews.llvm.org/D32473
Files:
llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td
llvm/trunk/test/CodeGen/MSP430/select-use-sr.ll
Index: llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td
===================================================================
--- llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td
+++ llvm/trunk/lib/Target/MSP430/MSP430InstrInfo.td
@@ -122,14 +122,16 @@
}
let usesCustomInserter = 1 in {
+ let Uses = [SR] in {
def Select8 : Pseudo<(outs GR8:$dst), (ins GR8:$src, GR8:$src2, i8imm:$cc),
"# Select8 PSEUDO",
[(set GR8:$dst,
(MSP430selectcc GR8:$src, GR8:$src2, imm:$cc))]>;
def Select16 : Pseudo<(outs GR16:$dst), (ins GR16:$src, GR16:$src2, i8imm:$cc),
"# Select16 PSEUDO",
[(set GR16:$dst,
(MSP430selectcc GR16:$src, GR16:$src2, imm:$cc))]>;
+ }
let Defs = [SR] in {
def Shl8 : Pseudo<(outs GR8:$dst), (ins GR8:$src, GR8:$cnt),
"# Shl8 PSEUDO",
Index: llvm/trunk/test/CodeGen/MSP430/select-use-sr.ll
===================================================================
--- llvm/trunk/test/CodeGen/MSP430/select-use-sr.ll
+++ llvm/trunk/test/CodeGen/MSP430/select-use-sr.ll
@@ -0,0 +1,21 @@
+; RUN: llc < %s -march=msp430 | FileCheck %s
+; PR32769
+
+target triple = "msp430"
+
+; Test that CMP instruction is not removed by MachineCSE.
+;
+; CHECK-LABEL: @f
+; CHECK: cmp.w r15, r13
+; CHECK: cmp.w r15, r13
+; CHECK-NEXT: jeq .LBB0_2
+define i16 @f(i16, i16, i16, i16) {
+entry:
+ %4 = icmp ult i16 %1, %3
+ %5 = zext i1 %4 to i16
+ %6 = icmp ult i16 %0, %2
+ %7 = zext i1 %6 to i16
+ %8 = icmp eq i16 %1, %3
+ %out = select i1 %8, i16 %5, i16 %7
+ ret i16 %out
+}
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