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llvm-project/llvm/test/CodeGen/ARM/inlineasm-ldr-pseudo.ll

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Fix PR18345: ldr= pseudo instruction produces incorrect code when using in inline assembly This patch fixes the ldr-pseudo implementation to work when used in inline assembly. The fix is to move arm assembler constant pools from the ARMAsmParser class to the ARMTargetStreamer class. Previously we kept the assembler generated constant pools in the ARMAsmParser object. This does not work for inline assembly because a new parser object is created for each blob of inline assembly. This patch moves the constant pools to the ARMTargetStreamer class so that the constant pool will remain alive for the entire code generation process. An ARMTargetStreamer class is now required for the arm backend. There was no existing implementation for MachO, only Asm and ELF. Instead of creating an empty MachO subclass, we decided to make the ARMTargetStreamer a non-abstract class and provide default (llvm_unreachable) implementations for the non constant-pool related methods. Differential Revision: http://llvm-reviews.chandlerc.com/D2638 llvm-svn: 200777
2014-02-05 01:22:40 +08:00
; PR18354
; We actually need to use -filetype=obj in this test because if we output
; assembly, the current code path will bypass the parser and just write the
; raw text out to the Streamer. We need to actually parse the inlineasm to
; demonstrate the bug. Going the asm->obj route does not show the issue.
; RUN: llc -mtriple=arm-none-linux < %s -filetype=obj | llvm-objdump -d - | FileCheck %s
; RUN: llc -mtriple=arm-apple-darwin < %s -filetype=obj | llvm-objdump -d - | FileCheck %s
; CHECK-LABEL: foo:
; CHECK: 0: 00 00 9f e5 ldr r0, [pc]
; CHECK: 4: 0e f0 a0 e1 mov pc, lr
; Make sure the constant pool entry comes after the return
[ARM] Fixup tests to take into account mov translation. NFC. Alter instances in the test-suite that use immediates that can be represented in the immediate field of a MOV. The reason for doing this is that when the LDR rt,=imm transformation to MOV rt, imm the existing tests do not need to be modified. Required by the patch that fixes PR25722. Patch by Peter Smith. llvm-svn: 269353
2016-05-13 05:22:37 +08:00
; CHECK: 8: 78 56 34 12
Fix PR18345: ldr= pseudo instruction produces incorrect code when using in inline assembly This patch fixes the ldr-pseudo implementation to work when used in inline assembly. The fix is to move arm assembler constant pools from the ARMAsmParser class to the ARMTargetStreamer class. Previously we kept the assembler generated constant pools in the ARMAsmParser object. This does not work for inline assembly because a new parser object is created for each blob of inline assembly. This patch moves the constant pools to the ARMTargetStreamer class so that the constant pool will remain alive for the entire code generation process. An ARMTargetStreamer class is now required for the arm backend. There was no existing implementation for MachO, only Asm and ELF. Instead of creating an empty MachO subclass, we decided to make the ARMTargetStreamer a non-abstract class and provide default (llvm_unreachable) implementations for the non constant-pool related methods. Differential Revision: http://llvm-reviews.chandlerc.com/D2638 llvm-svn: 200777
2014-02-05 01:22:40 +08:00
define i32 @foo() nounwind {
entry:
[ARM] Fixup tests to take into account mov translation. NFC. Alter instances in the test-suite that use immediates that can be represented in the immediate field of a MOV. The reason for doing this is that when the LDR rt,=imm transformation to MOV rt, imm the existing tests do not need to be modified. Required by the patch that fixes PR25722. Patch by Peter Smith. llvm-svn: 269353
2016-05-13 05:22:37 +08:00
%0 = tail call i32 asm sideeffect "ldr $0,=0x12345678", "=r"() nounwind
Fix PR18345: ldr= pseudo instruction produces incorrect code when using in inline assembly This patch fixes the ldr-pseudo implementation to work when used in inline assembly. The fix is to move arm assembler constant pools from the ARMAsmParser class to the ARMTargetStreamer class. Previously we kept the assembler generated constant pools in the ARMAsmParser object. This does not work for inline assembly because a new parser object is created for each blob of inline assembly. This patch moves the constant pools to the ARMTargetStreamer class so that the constant pool will remain alive for the entire code generation process. An ARMTargetStreamer class is now required for the arm backend. There was no existing implementation for MachO, only Asm and ELF. Instead of creating an empty MachO subclass, we decided to make the ARMTargetStreamer a non-abstract class and provide default (llvm_unreachable) implementations for the non constant-pool related methods. Differential Revision: http://llvm-reviews.chandlerc.com/D2638 llvm-svn: 200777
2014-02-05 01:22:40 +08:00
ret i32 %0
}