| 1 | // RUN: %clang -target mipsel-unknown-linux -S -o - -emit-llvm %s \ |
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| 2 | // RUN: | FileCheck %s |
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| 3 | |
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| 4 | // This checks that the frontend will accept inline asm memory constraints. |
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| 5 | |
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| 6 | int foo() |
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| 7 | { |
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| 8 | |
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| 9 | // 'R': An address that can be used in a non-macro load or stor' |
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| 10 | // This test will result in the higher and lower nibbles being |
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| 11 | // switched due to the lwl/lwr instruction pairs. |
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| 12 | // CHECK: %{{[0-9]+}} = call i32 asm sideeffect "lwl $0, 1 + $1\0A\09lwr $0, 2 + $1\0A\09", "=r,*R,~{$1}"(i32* %{{[0-9,a-f]+}}) #1, |
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| 13 | |
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| 14 | int c = 0xffbbccdd; |
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| 15 | |
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| 16 | int *p = &c; |
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| 17 | int out = 0; |
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| 18 | |
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| 19 | __asm volatile ( |
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| 20 | "lwl %0, 1 + %1\n\t" |
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| 21 | "lwr %0, 2 + %1\n\t" |
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| 22 | : "=r"(out) |
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| 23 | : "R"(*p) |
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| 24 | ); |
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| 25 | return 0; |
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| 26 | } |
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| 27 | |
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