[clang] Fix bug with -ffp-contract=fast-honor-pragmas (PR #104857)

[Aaron Ballman via cfe-commits]

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@@ -0,0 +1,37 @@
+// RUN: %clang_cc1 -O3 -ffp-contract=fast-honor-pragmas -triple %itanium_abi_triple -emit-llvm -o - %s | FileCheck %s
+
+float fp_contract_1(float a, float b, float c) {
+  // CHECK-LABEL: fp_contract_1fff(
+  // CHECK: fmul contract float
+  // CHECK: fadd contract float
+  return a * b + c;
+}
+
+float fp_contract_2(float a, float b, float c) {
+  // CHECK-LABEL: fp_contract_2fff(
+  // CHECK: fmul contract float
+  // CHECK: fsub contract float
+  return a * b - c;
+}
+
+void fp_contract_3(float *a, float b, float c) {
+  // CHECK-LABEL: fp_contract_3Pfff(
+  // CHECK: fmul contract float
+  // CHECK: fadd contract float
+  a[0] += b * c;
+}
+
+void fp_contract_4(float *a, float b, float c) {
+  // CHECK-LABEL: fp_contract_4Pfff(
+  // CHECK: fmul contract float
+  // CHECK: fsub contract float
+  a[0] -= b * c;
+}
+
+float fp_contract_5(float a, float b, float c) {
+  // CHECK-LABEL: fp_contract_5fff(
+  // CHECK: fmul contract float
+  // CHECK: fadd contract float
+  float t = a * b;
+  return t + c;
+}
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AaronBallman wrote:

Please add a newline to the end of the file.

https://github.com/llvm/llvm-project/pull/104857