forked from OSchip/llvm-project
75 lines
2.5 KiB
C
75 lines
2.5 KiB
C
// Test with fast math
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// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -DFAST \
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// RUN: -mreassociate \
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// RUN: -o - %s | FileCheck --check-prefixes CHECK,CHECKFAST,CHECKNP %s
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//
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// Test with fast math and fprotect-parens
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// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -DFAST \
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// RUN: -mreassociate -fprotect-parens -ffp-contract=on\
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// RUN: -o - %s | FileCheck --check-prefixes CHECK,CHECKFAST,CHECKPP %s
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//
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// Test without fast math: llvm intrinsic not created
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// RUN: %clang_cc1 -triple i386-pc-linux-gnu -emit-llvm -fprotect-parens\
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// RUN: -o - %s | FileCheck --implicit-check-not="llvm.arithmetic.fence" %s
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//
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int v;
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int addit(float a, float b) {
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// CHECK: define {{.*}}@addit(float %a, float %b) #0 {
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_Complex double cd, cd1;
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cd = __arithmetic_fence(cd1);
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// CHECKFAST: call{{.*}} double @llvm.arithmetic.fence.f64({{.*}}real)
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// CHECKFAST: call{{.*}} double @llvm.arithmetic.fence.f64({{.*}}imag)
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// Vector should be supported.
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typedef float __v2f32 __attribute__((__vector_size__(8)));
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__v2f32 vec1, vec2;
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vec1 = __arithmetic_fence(vec2);
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// CHECKFAST: call{{.*}} <2 x float> @llvm.arithmetic.fence.v2f32
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vec2 = (vec2 + vec1);
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// CHECKPP: call{{.*}} <2 x float> @llvm.arithmetic.fence.v2f32
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v = __arithmetic_fence(a + b);
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// CHECKFAST: call{{.*}} float @llvm.arithmetic.fence.f32(float %add{{.*}})
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v = (a + b);
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// CHECKPP: call{{.*}} float @llvm.arithmetic.fence.f32(float %add{{.*}})
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v = a + (b*b);
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// CHECKPP: fmul reassoc
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// CHECKPP-NEXT: call{{.*}} float @llvm.arithmetic.fence.f32(float %mul)
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// CHECKNP: fmul
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// CHECKNP: fadd
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v = b + a*a;
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// CHECKPP: call{{.*}} float @llvm.fmuladd.f32
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// CHECKNP: fmul
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// CHECKNP: fadd
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v = b + __arithmetic_fence(a*a); // Fence blocks recognition of FMA
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// CHECKPP: fmul
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// CHECKNP: fmul
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b = (a);
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(a) = b;
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// CHECK-NEXT fptosi
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// CHECK-NEXT store i32
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// CHECK-NEXT load float
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// CHECK-NEXT store float
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// CHECK-NEXT load float
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// CHECK-NEXT store float
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return 0;
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// CHECK-NEXT ret i32 0
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}
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int addit1(int a, int b) {
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// CHECK: define {{.*}}@addit1(i32 %a, i32 %b{{.*}}
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v = (a + b);
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// CHECK-NOT: call{{.*}} float @llvm.arithmetic.fence.int(float %add)
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return 0;
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}
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#ifdef FAST
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#pragma float_control(precise, on)
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int subit(float a, float b, float *fp) {
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// CHECKFAST: define {{.*}}@subit(float %a, float %b{{.*}}
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*fp = __arithmetic_fence(a - b);
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*fp = (a + b);
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// CHECK-NOT: call{{.*}} float @llvm.arithmetic.fence.f32(float %add)
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return 0;
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}
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#endif
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