[clang] [llvm] Clang: emit llvm.minnum and llvm.maxnum with nsz always (PR #113133)

[YunQiang Su via cfe-commits]

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@@ -0,0 +1,33 @@
+// RUN: %clang_cc1 -triple x86_64 %s -emit-llvm -o - 2>&1 | FileCheck %s --check-prefix=CHECK
+
+float fminf (float, float);
+double fmin (double, double);
+long double fminl (long double, long double);
+float fmaxf (float, float);
+double fmax (double, double);
+long double fmaxl (long double, long double);
+
+// CHECK: call nsz float @llvm.minnum.f32
+float fmin1(float a, float b) {
+        return fminf(a, b);
+}
+// CHECK: call nsz double @llvm.minnum.f64
+float fmin2(double a, double b) {
+        return fmin(a, b);
+}
+// CHECK: call nsz x86_fp80 @llvm.minnum.f80
+float fmin3(long double a, long double b) {
+        return fminl(a, b);
+}
+// CHECK: call nsz float @llvm.maxnum.f32
+float fmax1(float a, float b) {
+        return fmaxf(a, b);
+}
+// CHECK: call nsz double @llvm.maxnum.f64
+float fmax2(double a, double b) {
+        return fmax(a, b);
+}
+// CHECK: call nsz x86_fp80 @llvm.maxnum.f80
+float fmax3(long double a, long double b) {
+        return fmaxl(a, b);
+}
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wzssyqa wrote:

Do we have such C/__builtin functions?

https://github.com/llvm/llvm-project/pull/113133