| 1 | // RUN: %clang_cc1 -triple s390x-linux-gnu -emit-llvm %s -o - | FileCheck %s |
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| 2 | |
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| 3 | // SystemZ prefers to align all global variables to two bytes. |
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| 4 | |
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| 5 | struct test { |
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| 6 | signed char a; |
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| 7 | }; |
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| 8 | |
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| 9 | char c; |
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| 10 | // CHECK-DAG: @c = common global i8 0, align 2 |
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| 11 | |
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| 12 | struct test s; |
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| 13 | // CHECK-DAG: @s = common global %struct.test zeroinitializer, align 2 |
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| 14 | |
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| 15 | extern char ec; |
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| 16 | // CHECK-DAG: @ec = external global i8, align 2 |
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| 17 | |
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| 18 | extern struct test es; |
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| 19 | // CHECK-DAG: @es = external global %struct.test, align 2 |
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| 20 | |
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| 21 | // Dummy function to make sure external symbols are used. |
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| 22 | void func (void) |
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| 23 | { |
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| 24 | c = ec; |
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| 25 | s = es; |
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| 26 | } |
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| 27 | |
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| 28 | |
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| 29 | // Alignment should be respected for coerced argument loads |
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| 30 | |
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| 31 | struct arg { long y __attribute__((packed, aligned(4))); }; |
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| 32 | |
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| 33 | extern struct arg x; |
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| 34 | void f(struct arg); |
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| 35 | |
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| 36 | void test (void) |
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| 37 | { |
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| 38 | f(x); |
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| 39 | } |
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| 40 | |
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| 41 | // CHECK-LABEL: @test |
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| 42 | // CHECK: load i64, i64* getelementptr inbounds (%struct.arg, %struct.arg* @x, i32 0, i32 0), align 4 |
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| 43 | |
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| 44 | |
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