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This directive will write out the assembler-maintained constant pool for the current section. These constant pools are created to support the ldr-pseudo instruction (e.g. ldr r0, =val). The directive can be used by the programmer to place the constant pool in a location that can be reached by a pc-relative offset in the ldr instruction. llvm-svn: 197711
152 lines
3.4 KiB
ArmAsm
152 lines
3.4 KiB
ArmAsm
@ This test has a partner (ltorg.s) that contains matching
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@ tests for the .ltorg on linux targets. We need separate files
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@ because the syntax for switching sections and temporary labels differs
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@ between darwin and linux. Any tests added here should have a matching
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@ test added there.
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@RUN: llvm-mc -triple armv7-apple-darwin %s | FileCheck %s
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@RUN: llvm-mc -triple thumbv5-apple-darwin %s | FileCheck %s
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@RUN: llvm-mc -triple thumbv7-apple-darwin %s | FileCheck %s
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@ check that ltorg dumps the constant pool at the current location
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.section __TEXT,a,regular,pure_instructions
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@ CHECK-LABEL: f2:
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f2:
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ldr r0, =0x10001
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@ CHECK: ldr r0, Ltmp0
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adds r0, r0, #1
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adds r0, r0, #1
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b f3
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.ltorg
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@ constant pool
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@ CHECK: .align 2
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@ CHECK: .data_region
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@ CHECK-LABEL: Ltmp0:
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@ CHECK: .long 65537
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@ CHECK: .end_data_region
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@ CHECK-LABEL: f3:
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f3:
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adds r0, r0, #1
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adds r0, r0, #1
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@ check that ltorg clears the constant pool after dumping it
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.section __TEXT,b,regular,pure_instructions
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@ CHECK-LABEL: f4:
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f4:
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ldr r0, =0x10002
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@ CHECK: ldr r0, Ltmp1
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adds r0, r0, #1
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adds r0, r0, #1
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b f5
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.ltorg
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@ constant pool
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@ CHECK: .align 2
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@ CHECK: .data_region
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@ CHECK-LABEL: Ltmp1:
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@ CHECK: .long 65538
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@ CHECK: .end_data_region
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@ CHECK-LABEL: f5:
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f5:
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adds r0, r0, #1
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adds r0, r0, #1
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ldr r0, =0x10003
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@ CHECK: ldr r0, Ltmp2
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adds r0, r0, #1
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b f6
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.ltorg
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@ constant pool
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@ CHECK: .align 2
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@ CHECK: .data_region
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@ CHECK-LABEL: Ltmp2:
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@ CHECK: .long 65539
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@ CHECK: .end_data_region
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@ CHECK-LABEL: f6:
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f6:
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adds r0, r0, #1
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adds r0, r0, #1
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@ check that ltorg does not issue an error if there is no constant pool
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.section __TEXT,c,regular,pure_instructions
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@ CHECK-LABEL: f7:
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f7:
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adds r0, r0, #1
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b f8
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.ltorg
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f8:
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adds r0, r0, #1
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@ check that ltorg works for labels
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.section __TEXT,d,regular,pure_instructions
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@ CHECK-LABEL: f9:
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f9:
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adds r0, r0, #1
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adds r0, r0, #1
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ldr r0, =bar
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@ CHECK: ldr r0, Ltmp3
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adds r0, r0, #1
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adds r0, r0, #1
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adds r0, r0, #1
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b f10
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.ltorg
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@ constant pool
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@ CHECK: .align 2
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@ CHECK: .data_region
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@ CHECK-LABEL: Ltmp3:
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@ CHECK: .long bar
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@ CHECK: .end_data_region
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@ CHECK-LABEL: f10:
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f10:
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adds r0, r0, #1
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adds r0, r0, #1
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@ check that use of ltorg does not prevent dumping non-empty constant pools at end of section
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.section __TEXT,e,regular,pure_instructions
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@ CHECK-LABEL: f11:
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f11:
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adds r0, r0, #1
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adds r0, r0, #1
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ldr r0, =0x10004
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@ CHECK: ldr r0, Ltmp4
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b f12
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.ltorg
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@ constant pool
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@ CHECK: .align 2
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@ CHECK: .data_region
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@ CHECK-LABEL: Ltmp4:
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@ CHECK: .long 65540
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@ CHECK: .end_data_region
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@ CHECK-LABEL: f12:
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f12:
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adds r0, r0, #1
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ldr r0, =0x10005
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@ CHECK: ldr r0, Ltmp5
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.section __TEXT,f,regular,pure_instructions
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@ CHECK-LABEL: f13
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f13:
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adds r0, r0, #1
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adds r0, r0, #1
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@ should not have a constant pool at end of section with empty constant pools
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@ CHECK-NOT: .section __TEXT,a,regular,pure_instructions
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@ CHECK-NOT: .section __TEXT,b,regular,pure_instructions
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@ CHECK-NOT: .section __TEXT,c,regular,pure_instructions
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@ CHECK-NOT: .section __TEXT,d,regular,pure_instructions
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@ should have a non-empty constant pool at end of this section
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@ CHECK: .section __TEXT,e,regular,pure_instructions
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@ constant pool
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@ CHECK: .align 2
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@ CHECK: .data_region
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@ CHECK-LABEL: Ltmp5:
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@ CHECK: .long 65541
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@ CHECK: .end_data_region
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@ should not have a constant pool at end of section with empty constant pools
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@ CHECK-NOT: .section __TEXT,f,regular,pure_instructions
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