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89b7fb0173
Summary:
L is meant to support the second word used by 32b calling conventions for 64b arguments.
This is required for build 32b PowerPC Linux kernels after upstream
commit 334710b1496a ("powerpc/uaccess: Implement unsafe_put_user() using 'asm goto'")
Thanks for the report from @nathanchance, and reference to GCC's
implementation from @segher.
Fixes: pr/46186
Fixes: https://github.com/ClangBuiltLinux/linux/issues/1044
Reviewers: echristo, hfinkel, MaskRay
Reviewed By: MaskRay
Subscribers: MaskRay, wuzish, nemanjai, hiraditya, kbarton, steven.zhang, llvm-commits, segher, nathanchance, srhines
Tags: #llvm
Differential Revision: https://reviews.llvm.org/D81767
38 lines
1.2 KiB
LLVM
38 lines
1.2 KiB
LLVM
; RUN: llc -mtriple=ppc32 < %s | FileCheck %s
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; RUN: llc -mtriple=ppc64 < %s | FileCheck %s --check-prefix=PPC64
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; Test that %c works with immediates
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; CHECK-LABEL: test_inlineasm_c_output_template0
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; CHECK: #TEST 42
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define dso_local i32 @test_inlineasm_c_output_template0() {
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tail call void asm sideeffect "#TEST ${0:c}", "i"(i32 42)
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ret i32 42
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}
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; Test that %c works with global address
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; CHECK-LABEL: test_inlineasm_c_output_template1:
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; CHECK: #TEST baz
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@baz = internal global i32 0, align 4
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define dso_local i32 @test_inlineasm_c_output_template1() {
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tail call void asm sideeffect "#TEST ${0:c}", "i"(i32* nonnull @baz)
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ret i32 43
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}
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; Test that %n works with immediates
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; CHECK-LABEL: test_inlineasm_c_output_template2
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; CHECK: #TEST -42
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define dso_local i32 @test_inlineasm_c_output_template2() {
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tail call void asm sideeffect "#TEST ${0:n}", "i"(i32 42)
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ret i32 42
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}
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; Test that the machine specific %L works with memory operands.
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; CHECK-LABEL: test_inlineasm_L_output_template
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; CHECK: # 4(5)
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; PPC64-LABEL: test_inlineasm_L_output_template
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; PPC64: # 8(4)
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define dso_local void @test_inlineasm_L_output_template(i64 %0, i64* %1) {
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tail call void asm sideeffect "# ${0:L}", "*m"(i64* %1)
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ret void
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}
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