diff options
-rw-r--r-- | lib/Target/ARM/ARMFastISel.cpp | 20 | ||||
-rw-r--r-- | test/CodeGen/ARM/fast-isel.ll | 28 |
2 files changed, 44 insertions, 4 deletions
diff --git a/lib/Target/ARM/ARMFastISel.cpp b/lib/Target/ARM/ARMFastISel.cpp index ed95868..bcfa5c5 100644 --- a/lib/Target/ARM/ARMFastISel.cpp +++ b/lib/Target/ARM/ARMFastISel.cpp @@ -577,9 +577,6 @@ unsigned ARMFastISel::ARMMaterializeGV(const GlobalValue *GV, EVT VT) { Reloc::Model RelocM = TM.getRelocationModel(); - // TODO: No external globals for now. - if (Subtarget->GVIsIndirectSymbol(GV, RelocM)) return 0; - // TODO: Need more magic for ARM PIC. if (!isThumb && (RelocM == Reloc::PIC_)) return 0; @@ -614,6 +611,23 @@ unsigned ARMFastISel::ARMMaterializeGV(const GlobalValue *GV, EVT VT) { .addImm(0); } AddOptionalDefs(MIB); + + if (Subtarget->GVIsIndirectSymbol(GV, RelocM)) { + unsigned NewDestReg = createResultReg(TLI.getRegClassFor(VT)); + if (isThumb) + MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(ARM::t2LDRi12), + NewDestReg) + .addReg(DestReg) + .addImm(0); + else + MIB = BuildMI(*FuncInfo.MBB, FuncInfo.InsertPt, DL, TII.get(ARM::LDRi12), + NewDestReg) + .addReg(DestReg) + .addImm(0); + DestReg = NewDestReg; + AddOptionalDefs(MIB); + } + return DestReg; } diff --git a/test/CodeGen/ARM/fast-isel.ll b/test/CodeGen/ARM/fast-isel.ll index 8299c81..499c97f 100644 --- a/test/CodeGen/ARM/fast-isel.ll +++ b/test/CodeGen/ARM/fast-isel.ll @@ -131,4 +131,30 @@ bb3: ; ARM: sxth ; ARM: add ; ARM: sub -}
\ No newline at end of file +} + +; Check loads/stores with globals +@test4g = external global i32 + +define void @test4() { + %a = load i32* @test4g + %b = add i32 %a, 1 + store i32 %b, i32* @test4g + ret void + +; THUMB: ldr.n r0, LCPI4_1 +; THUMB: ldr r0, [r0] +; THUMB: ldr r0, [r0] +; THUMB: adds r0, #1 +; THUMB: ldr.n r1, LCPI4_0 +; THUMB: ldr r1, [r1] +; THUMB: str r0, [r1] + +; ARM: ldr r0, LCPI4_1 +; ARM: ldr r0, [r0] +; ARM: ldr r0, [r0] +; ARM: add r0, r0, #1 +; ARM: ldr r1, LCPI4_0 +; ARM: ldr r1, [r1] +; ARM: str r0, [r1] +} |