fix PR6605, X86ISD::CMP always returns i32 (EFLAGS), not

the operand type.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98507 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 7af4f4c39eab3e0ad09e4d3898ed576731f7d9d9..9c541dd1b9fbc992719a9abdb56785d67f1d837a 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -6197,7 +6197,7 @@ SDValue X86TargetLowering::LowerSELECT(SDValue Op, SelectionDAG &DAG) {
           N2C && N2C->isNullValue() &&
           RHSC && RHSC->isNullValue()) {
         SDValue CmpOp0 = Cmp.getOperand(0);
-        Cmp = DAG.getNode(X86ISD::CMP, dl, CmpOp0.getValueType(),
+        Cmp = DAG.getNode(X86ISD::CMP, dl, MVT::i32,
                           CmpOp0, DAG.getConstant(1, CmpOp0.getValueType()));
         return DAG.getNode(X86ISD::SETCC_CARRY, dl, Op.getValueType(),
                            DAG.getConstant(X86::COND_B, MVT::i8), Cmp);

diff --git a/lib/Target/X86/X86InstrInfo.td b/lib/Target/X86/X86InstrInfo.td
index be5741645b897a5eb408e012918d5fa564e6ee6b..ede998dd36dd46f254597200051494bd8322d970 100644 (file)
--- a/lib/Target/X86/X86InstrInfo.td
+++ b/lib/Target/X86/X86InstrInfo.td
@@ -21,6 +21,7 @@ def SDTIntShiftDOp: SDTypeProfile<1, 3,
                                   [SDTCisSameAs<0, 1>, SDTCisSameAs<0, 2>,
                                    SDTCisInt<0>, SDTCisInt<3>]>;
 
+// FIXME: Should be modelled as returning i32
 def SDTX86CmpTest : SDTypeProfile<0, 2, [SDTCisSameAs<0, 1>]>;
 
 def SDTX86Cmov    : SDTypeProfile<1, 4,
@@ -83,7 +84,6 @@ def X86shld    : SDNode<"X86ISD::SHLD",     SDTIntShiftDOp>;
 def X86shrd    : SDNode<"X86ISD::SHRD",     SDTIntShiftDOp>;
 
 def X86cmp     : SDNode<"X86ISD::CMP" ,     SDTX86CmpTest>;
-
 def X86bt      : SDNode<"X86ISD::BT",       SDTX86CmpTest>;
 
 def X86cmov    : SDNode<"X86ISD::CMOV",     SDTX86Cmov>;

diff --git a/test/CodeGen/X86/crash.ll b/test/CodeGen/X86/crash.ll
index 08f59add2bc2387218940cb388fc364db007c6eb..b75d2651ecbbc5c4284f589b5b86a9effab7c623 100644 (file)
--- a/test/CodeGen/X86/crash.ll
+++ b/test/CodeGen/X86/crash.ll
@@ -37,7 +37,7 @@ if.end:                                           ; preds = %land.end
 ; PR6577
 %pair = type { i64, double }
 
-define void @on4() {
+define void @test3() {
 dependentGraph243.exit:
   %subject19 = load %pair* undef                     ; <%1> [#uses=1]
   %0 = extractvalue %pair %subject19, 1              ; <double> [#uses=2]
@@ -47,3 +47,27 @@ dependentGraph243.exit:
   store %pair %3, %pair* undef
   ret void
 }
+
+; PR6605
+define i64 @test4(i8* %P) nounwind ssp {
+entry:
+  %tmp1 = load i8* %P                           ; <i8> [#uses=3]
+  %tobool = icmp eq i8 %tmp1, 0                   ; <i1> [#uses=1]
+  %tmp58 = sext i1 %tobool to i8                  ; <i8> [#uses=1]
+  %mul.i = and i8 %tmp58, %tmp1                   ; <i8> [#uses=1]
+  %conv6 = zext i8 %mul.i to i32                  ; <i32> [#uses=1]
+  %cmp = icmp ne i8 %tmp1, 1                      ; <i1> [#uses=1]
+  %conv11 = zext i1 %cmp to i32                   ; <i32> [#uses=1]
+  %call12 = tail call i32 @safe(i32 %conv11) nounwind ; <i32> [#uses=1]
+  %and = and i32 %conv6, %call12                  ; <i32> [#uses=1]
+  %tobool13 = icmp eq i32 %and, 0                 ; <i1> [#uses=1]
+  br i1 %tobool13, label %if.else, label %return
+
+if.else:                                          ; preds = %entry
+  br label %return
+
+return:                                           ; preds = %if.else, %entry
+  ret i64 undef
+}
+
+declare i32 @safe(i32)