When bit-twiddling CondCode values for integer comparisons produces

SETOEQ, is it does with (SETEQ & SETULE), map it to SETEQ.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51112 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 058e60f5fc831ec8e9a50f028981729976c66038..dc9d99131bf45330f29d4438b53fbb9ef55c92c7 100644 (file)
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -293,6 +293,7 @@ ISD::CondCode ISD::getSetCCAndOperation(ISD::CondCode Op1, ISD::CondCode Op2,
     switch (Result) {
     default: break;
     case ISD::SETUO : Result = ISD::SETFALSE; break;  // SETUGT & SETULT
+    case ISD::SETOEQ:                                 // SETEQ  & SETU[LG]E
     case ISD::SETUEQ: Result = ISD::SETEQ   ; break;  // SETUGE & SETULE
     case ISD::SETOLT: Result = ISD::SETULT  ; break;  // SETULT & SETNE
     case ISD::SETOGT: Result = ISD::SETUGT  ; break;  // SETUGT & SETNE

diff --git a/test/CodeGen/X86/pr2326.ll b/test/CodeGen/X86/pr2326.ll
new file mode 100644 (file)
index 0000000..6cf750c
--- /dev/null
+++ b/test/CodeGen/X86/pr2326.ll
@@ -0,0 +1,24 @@
+; RUN: llvm-as < %s | llc -march=x86 | grep sete
+; PR2326
+
+define i32 @func_59(i32 %p_60) nounwind  {
+entry:
+       %l_108 = alloca i32             ; <i32*> [#uses=2]
+       %tmp15 = load i32* null, align 4                ; <i32> [#uses=1]
+       %tmp16 = load i32* %l_108, align 4              ; <i32> [#uses=1]
+       %tmp17 = icmp eq i32 %tmp15, %tmp16             ; <i1> [#uses=1]
+       %tmp1718 = zext i1 %tmp17 to i8         ; <i8> [#uses=1]
+       %tmp19 = load i32* null, align 4                ; <i32> [#uses=1]
+       %tmp20 = load i32* %l_108, align 4              ; <i32> [#uses=1]
+       %tmp21 = icmp ule i32 %tmp19, %tmp20            ; <i1> [#uses=1]
+       %tmp2122 = zext i1 %tmp21 to i8         ; <i8> [#uses=1]
+       %toBool23 = icmp ne i8 %tmp1718, 0              ; <i1> [#uses=1]
+       %toBool24 = icmp ne i8 %tmp2122, 0              ; <i1> [#uses=1]
+       %tmp25 = and i1 %toBool23, %toBool24            ; <i1> [#uses=1]
+       %tmp2526 = zext i1 %tmp25 to i8         ; <i8> [#uses=1]
+       %tmp252627 = zext i8 %tmp2526 to i32            ; <i32> [#uses=1]
+       %tmp29 = call i32 (...)* @func_15( i32 %tmp252627, i32 0 ) nounwind             ; <i32> [#uses=0]
+       unreachable
+}
+
+declare i32 @func_15(...)