1 ; RUN: llc -mtriple=armv7-none-linux-gnueabi -verify-machineinstrs < %s | FileCheck %s --check-prefix=CHECK-WITH-LDRD
2 ; RUN: llc -mtriple=armv4-none-linux-gnueabi -verify-machineinstrs < %s | FileCheck %s --check-prefix=CHECK-WITHOUT-LDRD
3 ; RUN: llc -mtriple=thumbv7-none-linux-gnueabi -verify-machineinstrs < %s | FileCheck %s --check-prefix=CHECK-WITH-LDRD
5 define void @foo(i64* %addr) {
6 %val1 = tail call i64 asm sideeffect "ldrexd $0, ${0:H}, [r0]", "=&r,r"(i64* %addr)
7 %val2 = tail call i64 asm sideeffect "ldrexd $0, ${0:H}, [r0]", "=&r,r"(i64* %addr)
8 %val3 = tail call i64 asm sideeffect "ldrexd $0, ${0:H}, [r0]", "=&r,r"(i64* %addr)
9 %val4 = tail call i64 asm sideeffect "ldrexd $0, ${0:H}, [r0]", "=&r,r"(i64* %addr)
10 %val5 = tail call i64 asm sideeffect "ldrexd $0, ${0:H}, [r0]", "=&r,r"(i64* %addr)
11 %val6 = tail call i64 asm sideeffect "ldrexd $0, ${0:H}, [r0]", "=&r,r"(i64* %addr)
12 %val7 = tail call i64 asm sideeffect "ldrexd $0, ${0:H}, [r0]", "=&r,r"(i64* %addr)
14 ; Key point is that enough 64-bit paired GPR values are live that
15 ; one of them has to be spilled. This used to cause an abort because
16 ; an LDMIA was created with both a FrameIndex and an offset, which
19 ; CHECK-WITH-LDRD: strd {{r[0-9]+}}, {{r[0-9]+}}, [sp, #8]
20 ; CHECK-WITH-LDRD: strd {{r[0-9]+}}, {{r[0-9]+}}, [sp]
22 ; CHECK-WITH-LDRD: ldrd {{r[0-9]+}}, {{r[0-9]+}}, [sp, #8]
23 ; CHECK-WITH-LDRD: ldrd {{r[0-9]+}}, {{r[0-9]+}}, [sp]
25 ; We also want to ensure the register scavenger is working (i.e. an
26 ; offset from sp can be generated), so we need two spills.
27 ; CHECK-WITHOUT-LDRD: add [[ADDRREG:[a-z0-9]+]], sp, #{{[0-9]+}}
28 ; CHECK-WITHOUT-LDRD: stm [[ADDRREG]], {r{{[0-9]+}}, r{{[0-9]+}}}
29 ; CHECK-WITHOUT-LDRD: stm sp, {r{{[0-9]+}}, r{{[0-9]+}}}
31 ; In principle LLVM may have to recalculate the offset. At the moment
32 ; it reuses the original though.
33 ; CHECK-WITHOUT-LDRD: ldm [[ADDRREG]], {r{{[0-9]+}}, r{{[0-9]+}}}
34 ; CHECK-WITHOUT-LDRD: ldm sp, {r{{[0-9]+}}, r{{[0-9]+}}}
36 store volatile i64 %val1, i64* %addr
37 store volatile i64 %val2, i64* %addr
38 store volatile i64 %val3, i64* %addr
39 store volatile i64 %val4, i64* %addr
40 store volatile i64 %val5, i64* %addr
41 store volatile i64 %val6, i64* %addr
42 store volatile i64 %val7, i64* %addr