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2a67c9ee39
This patch provides a means to specify section-names for global variables, functions and static variables, using #pragma directives. This feature is only defined to work sensibly for ELF targets. One can specify section names as: #pragma clang section bss="myBSS" data="myData" rodata="myRodata" text="myText" One can "unspecify" a section name with empty string e.g. #pragma clang section bss="" data="" text="" rodata="" Reviewers: Roger Ferrer, Jonathan Roelofs, Reid Kleckner Differential Revision: https://reviews.llvm.org/D33412 llvm-svn: 304705
42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
// RUN: %clang_cc1 -x c -emit-llvm -triple arm-none-eabi -o - %s | FileCheck %s
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// Test that section attributes are attached to C tentative definitions as per
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// '#pragma clang section' directives.
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#pragma clang section bss = ".bss.1"
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int x; // bss.1
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#pragma clang section bss = ""
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int x; // stays in .bss.1
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int y; // not assigned a section attribute
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int z; // not assigned a section attribute
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#pragma clang section bss = ".bss.2"
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int x; // stays in .bss.1
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int y; // .bss.2
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// Test the same for `const` declarations.
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#pragma clang section rodata = ".rodata.1"
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const int cx; // rodata.1
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#pragma clang section rodata = ""
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const int cx; // stays in .rodata.1
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const int cy; // not assigned a section attribute
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const int cz; // not assigned a rodata section attribute
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#pragma clang section rodata = ".rodata.2"
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const int cx; // stays in .rodata.1
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const int cy; // .rodata.2
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// CHECK: @x = global i32 0, align 4 #0
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// CHECK: @y = global i32 0, align 4 #1
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// CHECK: @z = common global i32 0, align 4
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// CHECK: @cx = constant i32 0, align 4 #2
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// CHECK: @cy = constant i32 0, align 4 #3
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// CHECK: @cz = constant i32 0, align 4 #1
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// CHECK: attributes #0 = { "bss-section"=".bss.1" }
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// CHECK: attributes #1 = { "bss-section"=".bss.2" }
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// CHECK: attributes #2 = { "bss-section"=".bss.2" "rodata-section"=".rodata.1" }
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// CHECK: attributes #3 = { "bss-section"=".bss.2" "rodata-section"=".rodata.2" }
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