8b59af15ed
Like GCC, this re-uses the 'f' constraint and a new 'w' print-modifier:
asm ("ldi.w %w0, 1", "=f"(result));
Unlike GCC, the 'w' print-modifer is not _required_ to produce the intended
output. This is a consequence of differences in the internal handling of
the registers in each compiler. To be source-compatible between the
compilers, users must use the 'w' print-modifier.
MSA registers (including control registers) are supported in clobber lists.
llvm-svn: 194476
43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
// RUN: %clang -target mipsel-unknown-linux -S -o - -emit-llvm %s \
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// RUN: | FileCheck %s
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// This checks that the frontend will accept inline asm operand modifiers
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int printf(const char*, ...);
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typedef int v4i32 __attribute__((vector_size(16)));
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// CHECK: %{{[0-9]+}} = call i32 asm ".set noreorder;\0Alw $0,$1;\0A.set reorder;\0A", "=r,*m"(i32* getelementptr inbounds ([8 x i32]* @b, i32 {{[0-9]+}}, i32 {{[0-9]+}})) #2,
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// CHECK: %{{[0-9]+}} = call i32 asm "lw $0,${1:D};\0A", "=r,*m"(i32* getelementptr inbounds ([8 x i32]* @b, i32 {{[0-9]+}}, i32 {{[0-9]+}})) #2,
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// CHECK: %{{[0-9]+}} = call <4 x i32> asm "ldi.w ${0:w},1", "=f"
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int b[8] = {0,1,2,3,4,5,6,7};
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int main()
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{
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int i;
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v4i32 v4i32_r;
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// The first word. Notice, no 'D'
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{asm (
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".set noreorder;\n"
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"lw %0,%1;\n"
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".set reorder;\n"
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: "=r" (i)
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: "m" (*(b+4)));}
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printf("%d\n",i);
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// The second word
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{asm (
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"lw %0,%D1;\n"
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: "=r" (i)
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: "m" (*(b+4))
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);}
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// MSA registers
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{asm ("ldi.w %w0,1" : "=f" (v4i32_r));}
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printf("%d\n",i);
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return 1;
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}
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