From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001
From: "Zancanaro; Carlo" <czan8762@plang3.cs.usyd.edu.au>
Date: Mon, 24 Sep 2012 09:58:17 +1000
Subject: Add the clang library to the repo (with some of my changes, too).

---
 clang/test/CodeGen/libcalls.c | 75 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 clang/test/CodeGen/libcalls.c

(limited to 'clang/test/CodeGen/libcalls.c')

diff --git a/clang/test/CodeGen/libcalls.c b/clang/test/CodeGen/libcalls.c
new file mode 100644
index 0000000..458c591
--- /dev/null
+++ b/clang/test/CodeGen/libcalls.c
@@ -0,0 +1,75 @@
+// RUN: %clang_cc1 -fmath-errno -emit-llvm -o - %s -triple i386-unknown-unknown | FileCheck -check-prefix YES %s
+// RUN: %clang_cc1 -emit-llvm -o - %s -triple i386-unknown-unknown | FileCheck -check-prefix NO %s
+
+// CHECK-YES: define void @test_sqrt
+// CHECK-NO: define void @test_sqrt
+void test_sqrt(float a0, double a1, long double a2) {
+  // Following llvm-gcc's lead, we never emit these as intrinsics;
+  // no-math-errno isn't good enough.  We could probably use intrinsics
+  // with appropriate guards if it proves worthwhile.
+
+  // CHECK-YES: call float @sqrtf
+  // CHECK-NO: call float @sqrtf
+  float l0 = sqrtf(a0);
+
+  // CHECK-YES: call double @sqrt
+  // CHECK-NO: call double @sqrt
+  double l1 = sqrt(a1);
+
+  // CHECK-YES: call x86_fp80 @sqrtl
+  // CHECK-NO: call x86_fp80 @sqrtl
+  long double l2 = sqrtl(a2);
+}
+
+// CHECK-YES: declare float @sqrtf(float)
+// CHECK-YES: declare double @sqrt(double)
+// CHECK-YES: declare x86_fp80 @sqrtl(x86_fp80)
+// CHECK-NO: declare float @sqrtf(float) nounwind readnone
+// CHECK-NO: declare double @sqrt(double) nounwind readnone
+// CHECK-NO: declare x86_fp80 @sqrtl(x86_fp80) nounwind readnone
+
+// CHECK-YES: define void @test_pow
+// CHECK-NO: define void @test_pow
+void test_pow(float a0, double a1, long double a2) {
+  // CHECK-YES: call float @powf
+  // CHECK-NO: call float @llvm.pow.f32
+  float l0 = powf(a0, a0);
+
+  // CHECK-YES: call double @pow
+  // CHECK-NO: call double @llvm.pow.f64
+  double l1 = pow(a1, a1);
+
+  // CHECK-YES: call x86_fp80 @powl
+  // CHECK-NO: call x86_fp80 @llvm.pow.f80
+  long double l2 = powl(a2, a2);
+}
+
+// CHECK-YES: declare float @powf(float, float)
+// CHECK-YES: declare double @pow(double, double)
+// CHECK-YES: declare x86_fp80 @powl(x86_fp80, x86_fp80)
+// CHECK-NO: declare float @llvm.pow.f32(float, float) nounwind readonly
+// CHECK-NO: declare double @llvm.pow.f64(double, double) nounwind readonly
+// CHECK-NO: declare x86_fp80 @llvm.pow.f80(x86_fp80, x86_fp80) nounwind readonly
+
+// CHECK-YES: define void @test_fma
+// CHECK-NO: define void @test_fma
+void test_fma(float a0, double a1, long double a2) {
+    // CHECK-YES: call float @llvm.fma.f32
+    // CHECK-NO: call float @llvm.fma.f32
+    float l0 = fmaf(a0, a0, a0);
+
+    // CHECK-YES: call double @llvm.fma.f64
+    // CHECK-NO: call double @llvm.fma.f64
+    double l1 = fma(a1, a1, a1);
+
+    // CHECK-YES: call x86_fp80 @llvm.fma.f80
+    // CHECK-NO: call x86_fp80 @llvm.fma.f80
+    long double l2 = fmal(a2, a2, a2);
+}
+
+// CHECK-YES: declare float @llvm.fma.f32(float, float, float) nounwind readnone
+// CHECK-YES: declare double @llvm.fma.f64(double, double, double) nounwind readnone
+// CHECK-YES: declare x86_fp80 @llvm.fma.f80(x86_fp80, x86_fp80, x86_fp80) nounwind readnone
+// CHECK-NO: declare float @llvm.fma.f32(float, float, float) nounwind readnone
+// CHECK-NO: declare double @llvm.fma.f64(double, double, double) nounwind readnone
+// CHECK-NO: declare x86_fp80 @llvm.fma.f80(x86_fp80, x86_fp80, x86_fp80) nounwind readnone
-- 
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