Precommit missed opt for pow poison

Author: badumbatish

llvm/test/Transforms/InstSimplify/fold-intrinsics.ll

@@ -33,7 +33,7 @@ define void @powi(double %V, ptr%P) {
 define void @powi_i16(float %V, ptr%P) {
 ; CHECK-LABEL: @powi_i16(
 ; CHECK-NEXT:    store volatile float 1.000000e+00, ptr [[P:%.*]], align 4
-; CHECK-NEXT:    store volatile float [[V:%.*]], ptr [[P]], align 4
+; CHECK-NEXT:    store volatile float [[D:%.*]], ptr [[P]], align 4
 ; CHECK-NEXT:    ret void
 ;
   %B = tail call float @llvm.powi.f32.i16(float %V, i16 0) nounwind
@@ -52,3 +52,39 @@ define i32 @test_ctpop_poison(i32 %a) {
   %res = tail call i32 @llvm.ctpop.i32(i32 poison)
   ret i32 %res
 }
+
+define void @pow_poison_i16(i16 %arg_int,float %arg_flt, ptr %P) {
+; CHECK-LABEL: @pow_poison_i16(
+; CHECK-NEXT:    [[TMP1:%.*]] = tail call float @llvm.powi.f32.i16(float poison, i16 [[ARG_INT:%.*]]) #[[ATTR1:[0-9]+]]
+; CHECK-NEXT:    store volatile float [[TMP1]], ptr [[P:%.*]], align 4
+; CHECK-NEXT:    [[TMP2:%.*]] = tail call float @llvm.pow.f32(float poison, float [[ARG_FLT:%.*]]) #[[ATTR1]]
+; CHECK-NEXT:    store volatile float [[TMP2]], ptr [[P]], align 4
+; CHECK-NEXT:    [[TMP3:%.*]] = tail call float @llvm.powi.f32.i16(float [[ARG_FLT]], i16 poison) #[[ATTR1]]
+; CHECK-NEXT:    store volatile float [[TMP3]], ptr [[P]], align 4
+; CHECK-NEXT:    [[TMP4:%.*]] = tail call float @llvm.pow.f32(float [[ARG_FLT]], float poison) #[[ATTR1]]
+; CHECK-NEXT:    store volatile float [[TMP4]], ptr [[P]], align 4
+; CHECK-NEXT:    [[TMP5:%.*]] = tail call float @llvm.powi.f32.i16(float poison, i16 poison) #[[ATTR1]]
+; CHECK-NEXT:    store volatile float [[TMP5]], ptr [[P]], align 4
+; CHECK-NEXT:    [[TMP6:%.*]] = tail call float @llvm.pow.f32(float poison, float poison) #[[ATTR1]]
+; CHECK-NEXT:    store volatile float [[TMP6]], ptr [[P]], align 4
+; CHECK-NEXT:    ret void
+;
+  %2 = tail call float @llvm.powi.f32.i16(float poison, i16 %arg_int) nounwind
+  store volatile float %2, ptr %P
+
+  %3 = tail call float @llvm.pow(float poison, float %arg_flt) nounwind
+  store volatile float %3, ptr %P
+
+  %4 = tail call float @llvm.powi.f32.i16(float %arg_flt, i16 poison) nounwind
+  store volatile float %4, ptr %P
+
+  %5 = tail call float @llvm.pow(float %arg_flt, float poison) nounwind
+  store volatile float %5, ptr %P
+
+  %6 = tail call float @llvm.powi.f32.i16(float poison, i16 poison) nounwind
+  store volatile float %6, ptr %P
+
+  %7 = tail call float @llvm.pow(float poison, float poison) nounwind
+  store volatile float %7, ptr %P
+  ret void
+}