Add VPUSH/VPOP instructions to the ARM32 integrated assembler.

tests_lit/assembler/arm32/vpush.ll

+; Show that we know how to translate vpush and vpop.
+
+; NOTE: We use -O2 because vpush/vpop only occur if optimized. Uses
+; simple call with double parameters to cause the insertion of
+; vpush/vpop.
+
+; REQUIRES: allow_dump
+
+; Compile using standalone assembler.
+; RUN: %p2i --filetype=asm -i %s --target=arm32 --args -O2 \
+; RUN:   | FileCheck %s --check-prefix=ASM
+
+; Show bytes in assembled standalone code.
+; RUN: %p2i --filetype=asm -i %s --target=arm32 --assemble --disassemble \
+; RUN:   --args -O2 | FileCheck %s --check-prefix=DIS
+
+; Compile using integrated assembler.
+; RUN: %p2i --filetype=iasm -i %s --target=arm32 --args -O2 \
+; RUN:   | FileCheck %s --check-prefix=IASM
+
+; Show bytes in assembled integrated code.
+; RUN: %p2i --filetype=iasm -i %s --target=arm32 --assemble --disassemble \
+; RUN:   --args -O2 | FileCheck %s --check-prefix=DIS
+
+define internal double @testVpushVpop(double %v1, double %v2) {
+; ASM-LABEL: testVpushVpop:
+; DIS-LABEL: 00000000 <testVpushVpop>:
+; IASM-LABEL: testVpushVpop:
+
+entry:
+; ASM-NEXT: .LtestVpushVpop$entry:
+; IASM-NEXT: .LtestVpushVpop$entry:
+
+; ASM-NEXT:     vpush   {s28, s29, s30, s31}
+; DIS-NEXT:    0:       ed2dea04
+; IASM-NEXT:    .byte 0x4
+; IASM-NEXT:    .byte 0xea
+; IASM-NEXT:    .byte 0x2d
+; IASM-NEXT:    .byte 0xed
+
+; ASM-NEXT:     push    {lr}
+; DIS-NEXT:    4:       e52de004
+; IASM-NEXT:    .byte 0x4
+; IASM-NEXT:    .byte 0xe0
+; IASM-NEXT:    .byte 0x2d
+; IASM-NEXT:    .byte 0xe5
+
+; ASM-NEXT:     sub     sp, sp, #12
+; DIS-NEXT:    8:       e24dd00c
+; IASM-NEXT:    .byte 0xc
+; IASM-NEXT:    .byte 0xd0
+; IASM-NEXT:    .byte 0x4d
+; IASM-NEXT:    .byte 0xe2
+
+  call void @foo()

[John, 2015/12/18 00:02:31]

Move the call to line 65?

[Karl, 2015/12/18 16:26:51]

Done.

+
+; ASM-NEXT:     vmov.f64        d15, d0
+; DIS-NEXT:    c:       eeb0fb40
+; IASM-NEXT:    vmov.f64        d15, d0
+
+; ASM-NEXT:     vmov.f64        d14, d1
+; DIS-NEXT:   10:       eeb0eb41
+; IASM-NEXT:    vmov.f64        d14, d1
+
+; ASM-NEXT:     bl      foo
+; DIS-NEXT:   14:       ebfffffe
+; IASM-NEXT:    bl      foo     @ .word ebfffffe
+
+  %res = fadd double %v1, %v2
+
+; ASM-NEXT:     vadd.f64        d15, d15, d14
+; DIS-NEXT:   18:       ee3ffb0e
+; IASM-NEXT:    vadd.f64        d15, d15, d14
+
+; ASM-NEXT:     vmov.f64        d0, d15
+; DIS-NEXT:   1c:       eeb00b4f
+; IASM-NEXT:    vmov.f64        d0, d15
+
+  ret double %res
+
+; ASM-NEXT:     add     sp, sp, #12
+; DIS-NEXT:   20:       e28dd00c
+; IASM-NEXT:    .byte 0xc
+; IASM-NEXT:    .byte 0xd0
+; IASM-NEXT:    .byte 0x8d
+; IASM-NEXT:    .byte 0xe2
+
+; ASM-NEXT:     pop     {lr}
+; ASM-NEXT:     # lr = def.pseudo 
+; DIS-NEXT:   24:       e49de004
+; IASM-NEXT:    .byte 0x4
+; IASM-NEXT:    .byte 0xe0
+; IASM-NEXT:    .byte 0x9d
+; IASM-NEXT:    .byte 0xe4
+
+; ASM-NEXT:     vpop    {s28, s29, s30, s31}
+; ASM-NEXT:     # s28 = def.pseudo 
+; ASM-NEXT:     # s29 = def.pseudo 
+; ASM-NEXT:     # s30 = def.pseudo 
+; ASM-NEXT:     # s31 = def.pseudo 
+; DIS-NEXT:   28:       ecbdea04
+; IASM-NEXT:    .byte 0x4
+; IASM-NEXT:    .byte 0xea
+; IASM-NEXT:    .byte 0xbd
+; IASM-NEXT:    .byte 0xec
+
+; ASM-NEXT:     bx      lr
+; DIS-NEXT:   2c:       e12fff1e
+; IASM-NEXT:    .byte 0x1e
+; IASM-NEXT:    .byte 0xff
+; IASM-NEXT:    .byte 0x2f
+; IASM-NEXT:    .byte 0xe1
+
+}
+
+define internal void @foo() {
+  ret void
+}