================
@@ -0,0 +1,29 @@
+; RUN: llc -O0 -mtriple=spirv-unknown-unknown %s -o - | FileCheck %s
+; RUN: %if spirv-tools %{ llc -O0 -mtriple=spirv-unknown-unknown %s -o -
-filetype=obj | spirv-val %}
+
+; CHECK: OpExtInstImport "GLSL.std.450"
+
+define noundef float @rsqrt_float(float noundef %a) {
+entry:
+; CHECK: %[[#]] = OpExtInst %[[#]] %[[#]] InverseSqrt %[[#]]
+ %elt.rsqrt = call float @llvm.spv.rsqrt.f32(float %a)
+ ret float %elt.rsqrt
+}
+
+define noundef half @rsqrt_half(half noundef %a) {
+entry:
+; CHECK: %[[#]] = OpExtInst %[[#]] %[[#]] InverseSqrt %[[#]]
+ %elt.rsqrt = call half @llvm.spv.rsqrt.f16(half %a)
+ ret half %elt.rsqrt
+}
+
+define noundef double @rsqrt_double(double noundef %a) {
+entry:
+; CHECK: %[[#]] = OpExtInst %[[#]] %[[#]] InverseSqrt %[[#]]
+ %elt.rsqrt = call double @llvm.spv.rsqrt.f64(double %a)
+ ret double %elt.rsqrt
+}
+
+declare half @llvm.spv.sqrt.f16(half)
----------------
farzonl wrote:
add vector tests, spirv backedn supports vectors so we might aswell add those
tests.
https://github.com/llvm/llvm-project/pull/95849
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