1 files changed, 155 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/fcmp-special.ll b/test/Transforms/InstCombine/fcmp-special.ll
new file mode 100644
index 0000000000..a39021e08d
--- /dev/null
+++ b/test/Transforms/InstCombine/fcmp-special.ll
@@ -0,0 +1,155 @@
+; RUN: opt < %s -instcombine -S | FileCheck %s
+
+; Infinity
+
+; CHECK: inf0
+; CHECK: ret i1 false
+define i1 @inf0(double %arg) nounwind readnone {
+  %tmp = fcmp ogt double %arg, 0x7FF0000000000000
+  ret i1 %tmp
+}
+
+; CHECK: inf1
+; CHECK: ret i1 true
+define i1 @inf1(double %arg) nounwind readnone {
+  %tmp = fcmp ule double %arg, 0x7FF0000000000000
+  ret i1 %tmp
+}
+
+; Negative infinity
+
+; CHECK: ninf0
+; CHECK: ret i1 false
+define i1 @ninf0(double %arg) nounwind readnone {
+  %tmp = fcmp olt double %arg, 0xFFF0000000000000
+  ret i1 %tmp
+}
+
+; CHECK: ninf1
+; CHECK: ret i1 true
+define i1 @ninf1(double %arg) nounwind readnone {
+  %tmp = fcmp uge double %arg, 0xFFF0000000000000
+  ret i1 %tmp
+}
+
+; NaNs
+
+; CHECK: nan0
+; CHECK: ret i1 false
+define i1 @nan0(double %arg) nounwind readnone {
+  %tmp = fcmp ord double %arg, 0x7FF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nan1
+; CHECK: ret i1 false
+define i1 @nan1(double %arg) nounwind readnone {
+  %tmp = fcmp oeq double %arg, 0x7FF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nan2
+; CHECK: ret i1 false
+define i1 @nan2(double %arg) nounwind readnone {
+  %tmp = fcmp olt double %arg, 0x7FF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nan3
+; CHECK: ret i1 true
+define i1 @nan3(double %arg) nounwind readnone {
+  %tmp = fcmp uno double %arg, 0x7FF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nan4
+; CHECK: ret i1 true
+define i1 @nan4(double %arg) nounwind readnone {
+  %tmp = fcmp une double %arg, 0x7FF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nan5
+; CHECK: ret i1 true
+define i1 @nan5(double %arg) nounwind readnone {
+  %tmp = fcmp ult double %arg, 0x7FF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; Negative NaN.
+
+; CHECK: nnan0
+; CHECK: ret i1 false
+define i1 @nnan0(double %arg) nounwind readnone {
+  %tmp = fcmp ord double %arg, 0xFFF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nnan1
+; CHECK: ret i1 false
+define i1 @nnan1(double %arg) nounwind readnone {
+  %tmp = fcmp oeq double %arg, 0xFFF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nnan2
+; CHECK: ret i1 false
+define i1 @nnan2(double %arg) nounwind readnone {
+  %tmp = fcmp olt double %arg, 0xFFF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nnan3
+; CHECK: ret i1 true
+define i1 @nnan3(double %arg) nounwind readnone {
+  %tmp = fcmp uno double %arg, 0xFFF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nnan4
+; CHECK: ret i1 true
+define i1 @nnan4(double %arg) nounwind readnone {
+  %tmp = fcmp une double %arg, 0xFFF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; CHECK: nnan5
+; CHECK: ret i1 true
+define i1 @nnan5(double %arg) nounwind readnone {
+  %tmp = fcmp ult double %arg, 0xFFF00000FFFFFFFF
+  ret i1 %tmp
+}
+
+; Negative zero.
+
+; CHECK: nzero0
+; CHECK: ret i1 true
+define i1 @nzero0() {
+  %tmp = fcmp oeq double 0.0, -0.0
+  ret i1 %tmp
+}
+
+; CHECK: nzero1
+; CHECK: ret i1 false
+define i1 @nzero1() {
+  %tmp = fcmp ogt double 0.0, -0.0
+  ret i1 %tmp
+}
+
+; Misc.
+
+; CHECK: misc0
+; CHECK: %tmp = fcmp ord double %arg, 0.000000e+00
+; CHECK: ret i1 %tmp
+define i1 @misc0(double %arg) {
+  %tmp = fcmp oeq double %arg, %arg
+  ret i1 %tmp
+}
+
+; CHECK: misc1
+; CHECK: ret i1 false
+define i1 @misc1(double %arg) {
+  %tmp = fcmp one double %arg, %arg
+  ret i1 %tmp
+}
+