[InstCombine] Add tests for reassoc of and/or of fcmps (NFC)

Author: nikic

llvm/test/Transforms/InstCombine/and-fcmp.ll

@@ -5042,6 +5042,66 @@ define i1 @isnormal_logical_select_0_fmf1(half %x) {
   ret i1 %and
 }
 
+define i1 @and_fcmp_reassoc1(i1 %x, double %a, double %b) {
+; CHECK-LABEL: @and_fcmp_reassoc1(
+; CHECK-NEXT:    [[TMP1:%.*]] = fcmp ult double [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[CMP1:%.*]] = fcmp ugt double [[A]], [[B]]
+; CHECK-NEXT:    [[RETVAL:%.*]] = and i1 [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    [[RETVAL1:%.*]] = and i1 [[RETVAL]], [[CMP1]]
+; CHECK-NEXT:    ret i1 [[RETVAL1]]
+;
+  %cmp = fcmp ult double %a, %b
+  %cmp1 = fcmp ugt double %a, %b
+  %and = and i1 %cmp, %x
+  %retval = and i1 %and, %cmp1
+  ret i1 %retval
+}
+
+define i1 @and_fcmp_reassoc2(i1 %x, double %a, double %b) {
+; CHECK-LABEL: @and_fcmp_reassoc2(
+; CHECK-NEXT:    [[TMP1:%.*]] = fcmp ult double [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[CMP1:%.*]] = fcmp ugt double [[A]], [[B]]
+; CHECK-NEXT:    [[RETVAL:%.*]] = and i1 [[X:%.*]], [[TMP1]]
+; CHECK-NEXT:    [[RETVAL1:%.*]] = and i1 [[RETVAL]], [[CMP1]]
+; CHECK-NEXT:    ret i1 [[RETVAL1]]
+;
+  %cmp = fcmp ult double %a, %b
+  %cmp1 = fcmp ugt double %a, %b
+  %and = and i1 %x, %cmp
+  %retval = and i1 %and, %cmp1
+  ret i1 %retval
+}
+
+define i1 @and_fcmp_reassoc3(i1 %x, double %a, double %b) {
+; CHECK-LABEL: @and_fcmp_reassoc3(
+; CHECK-NEXT:    [[TMP1:%.*]] = fcmp ult double [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[CMP1:%.*]] = fcmp ugt double [[A]], [[B]]
+; CHECK-NEXT:    [[RETVAL:%.*]] = and i1 [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    [[RETVAL1:%.*]] = and i1 [[CMP1]], [[RETVAL]]
+; CHECK-NEXT:    ret i1 [[RETVAL1]]
+;
+  %cmp = fcmp ult double %a, %b
+  %cmp1 = fcmp ugt double %a, %b
+  %and = and i1 %cmp, %x
+  %retval = and i1 %cmp1, %and
+  ret i1 %retval
+}
+
+define i1 @and_fcmp_reassoc4(i1 %x, double %a, double %b) {
+; CHECK-LABEL: @and_fcmp_reassoc4(
+; CHECK-NEXT:    [[TMP1:%.*]] = fcmp ult double [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[CMP1:%.*]] = fcmp ugt double [[A]], [[B]]
+; CHECK-NEXT:    [[RETVAL:%.*]] = and i1 [[X:%.*]], [[TMP1]]
+; CHECK-NEXT:    [[RETVAL1:%.*]] = and i1 [[CMP1]], [[RETVAL]]
+; CHECK-NEXT:    ret i1 [[RETVAL1]]
+;
+  %cmp = fcmp ult double %a, %b
+  %cmp1 = fcmp ugt double %a, %b
+  %and = and i1 %x, %cmp
+  %retval = and i1 %cmp1, %and
+  ret i1 %retval
+}
+
 declare half @llvm.fabs.f16(half)
 declare <2 x half> @llvm.fabs.v2f16(<2 x half>)
 declare half @llvm.copysign.f16(half, half)

llvm/test/Transforms/InstCombine/or-fcmp.ll

@@ -4605,3 +4605,63 @@ define i1 @intersect_fmf_4(double %a, double %b) {
   %retval = or i1 %cmp, %cmp1
   ret i1 %retval
 }
+
+define i1 @or_fcmp_reassoc1(i1 %x, double %a, double %b) {
+; CHECK-LABEL: @or_fcmp_reassoc1(
+; CHECK-NEXT:    [[OR:%.*]] = fcmp olt double [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[CMP2:%.*]] = fcmp ogt double [[A]], [[B]]
+; CHECK-NEXT:    [[RETVAL:%.*]] = or i1 [[OR]], [[CMP1:%.*]]
+; CHECK-NEXT:    [[RETVAL1:%.*]] = or i1 [[RETVAL]], [[CMP2]]
+; CHECK-NEXT:    ret i1 [[RETVAL1]]
+;
+  %cmp = fcmp olt double %a, %b
+  %cmp1 = fcmp ogt double %a, %b
+  %or = or i1 %cmp, %x
+  %retval = or i1 %or, %cmp1
+  ret i1 %retval
+}
+
+define i1 @or_fcmp_reassoc2(i1 %x, double %a, double %b) {
+; CHECK-LABEL: @or_fcmp_reassoc2(
+; CHECK-NEXT:    [[TMP1:%.*]] = fcmp olt double [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[CMP1:%.*]] = fcmp ogt double [[A]], [[B]]
+; CHECK-NEXT:    [[RETVAL:%.*]] = or i1 [[X:%.*]], [[TMP1]]
+; CHECK-NEXT:    [[RETVAL1:%.*]] = or i1 [[RETVAL]], [[CMP1]]
+; CHECK-NEXT:    ret i1 [[RETVAL1]]
+;
+  %cmp = fcmp olt double %a, %b
+  %cmp1 = fcmp ogt double %a, %b
+  %or = or i1 %x, %cmp
+  %retval = or i1 %or, %cmp1
+  ret i1 %retval
+}
+
+define i1 @or_fcmp_reassoc3(i1 %x, double %a, double %b) {
+; CHECK-LABEL: @or_fcmp_reassoc3(
+; CHECK-NEXT:    [[TMP1:%.*]] = fcmp olt double [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[CMP1:%.*]] = fcmp ogt double [[A]], [[B]]
+; CHECK-NEXT:    [[RETVAL:%.*]] = or i1 [[TMP1]], [[X:%.*]]
+; CHECK-NEXT:    [[RETVAL1:%.*]] = or i1 [[CMP1]], [[RETVAL]]
+; CHECK-NEXT:    ret i1 [[RETVAL1]]
+;
+  %cmp = fcmp olt double %a, %b
+  %cmp1 = fcmp ogt double %a, %b
+  %or = or i1 %cmp, %x
+  %retval = or i1 %cmp1, %or
+  ret i1 %retval
+}
+
+define i1 @or_fcmp_reassoc4(i1 %x, double %a, double %b) {
+; CHECK-LABEL: @or_fcmp_reassoc4(
+; CHECK-NEXT:    [[TMP1:%.*]] = fcmp olt double [[A:%.*]], [[B:%.*]]
+; CHECK-NEXT:    [[CMP1:%.*]] = fcmp ogt double [[A]], [[B]]
+; CHECK-NEXT:    [[RETVAL:%.*]] = or i1 [[X:%.*]], [[TMP1]]
+; CHECK-NEXT:    [[RETVAL1:%.*]] = or i1 [[CMP1]], [[RETVAL]]
+; CHECK-NEXT:    ret i1 [[RETVAL1]]
+;
+  %cmp = fcmp olt double %a, %b
+  %cmp1 = fcmp ogt double %a, %b
+  %or = or i1 %x, %cmp
+  %retval = or i1 %cmp1, %or
+  ret i1 %retval
+}