fd739804e0
For a default visibility external linkage definition, dso_local is set for ELF
-fno-pic/-fpie and COFF and Mach-O. Since default clang -cc1 for ELF is similar
to -fpic ("PIC Level" is not set), this nuance causes unneeded binary format differences.
To make emitted IR similar, ELF -cc1 -fpic will default to -fno-semantic-interposition,
which sets dso_local for default visibility external linkage definitions.
To make this flip smooth and enable future (dso_local as definition default),
this patch replaces (function) `define ` with `define{{.*}} `,
(variable/constant/alias) `= ` with `={{.*}} `, or inserts appropriate `{{.*}} `.
47 lines
1.4 KiB
C
47 lines
1.4 KiB
C
// RUN: %clang_cc1 -triple riscv32 -O2 -emit-llvm %s -o - \
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// RUN: | FileCheck %s
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// RUN: %clang_cc1 -triple riscv64 -O2 -emit-llvm %s -o - \
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// RUN: | FileCheck %s
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// Test RISC-V specific inline assembly constraints.
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void test_I() {
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// CHECK-LABEL: define{{.*}} void @test_I()
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// CHECK: call void asm sideeffect "", "I"(i32 2047)
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asm volatile ("" :: "I"(2047));
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// CHECK: call void asm sideeffect "", "I"(i32 -2048)
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asm volatile ("" :: "I"(-2048));
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}
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void test_J() {
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// CHECK-LABEL: define{{.*}} void @test_J()
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// CHECK: call void asm sideeffect "", "J"(i32 0)
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asm volatile ("" :: "J"(0));
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}
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void test_K() {
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// CHECK-LABEL: define{{.*}} void @test_K()
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// CHECK: call void asm sideeffect "", "K"(i32 31)
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asm volatile ("" :: "K"(31));
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// CHECK: call void asm sideeffect "", "K"(i32 0)
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asm volatile ("" :: "K"(0));
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}
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float f;
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double d;
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void test_f() {
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// CHECK-LABEL: define{{.*}} void @test_f()
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// CHECK: [[FLT_ARG:%[a-zA-Z_0-9]+]] = load float, float* @f
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// CHECK: call void asm sideeffect "", "f"(float [[FLT_ARG]])
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asm volatile ("" :: "f"(f));
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// CHECK: [[FLT_ARG:%[a-zA-Z_0-9]+]] = load double, double* @d
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// CHECK: call void asm sideeffect "", "f"(double [[FLT_ARG]])
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asm volatile ("" :: "f"(d));
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}
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void test_A(int *p) {
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// CHECK-LABEL: define{{.*}} void @test_A(i32* %p)
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// CHECK: call void asm sideeffect "", "*A"(i32* %p)
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asm volatile("" :: "A"(*p));
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}
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