forked from OSchip/llvm-project
180 lines
6.2 KiB
LLVM
180 lines
6.2 KiB
LLVM
; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \
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; RUN: -mcpu=future -ppc-asm-full-reg-names < %s \
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; RUN: | FileCheck %s --check-prefixes=CHECK-S,CHECK-ALL
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; RUN: llc -verify-machineinstrs -mtriple=powerpc64le-unknown-linux-gnu \
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; RUN: -mcpu=pwr9 -ppc-asm-full-reg-names < %s \
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; RUN: | FileCheck %s --check-prefixes=CHECK-P9,CHECK-ALL
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@global_int = common dso_local local_unnamed_addr global i32 0, align 4
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define dso_local signext i32 @NoTOC() local_unnamed_addr {
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; CHECK-ALL-LABEL: NoTOC:
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; CHECK-S-NOT: .localentry
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; CHECK-S: li r3, 42
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; CHECK-S-NEXT: blr
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entry:
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ret i32 42
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}
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define dso_local signext i32 @AsmClobberX2(i32 signext %a, i32 signext %b) local_unnamed_addr {
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; CHECK-ALL-LABEL: AsmClobberX2:
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; CHECK-S: .localentry AsmClobberX2, 1
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; CHECK-S: add r3, r4, r3
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; CHECK-S: #APP
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; CHECK-S-NEXT: nop
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; CHECK-S-NEXT: #NO_APP
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; CHECK-S: blr
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entry:
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%add = add nsw i32 %b, %a
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tail call void asm sideeffect "nop", "~{r2}"()
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ret i32 %add
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}
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; FIXME: This is actually a test case that shows a bug. On power9 and earlier
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; this test should not compile. On later CPUs (like this test) the @toc
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; should be replaced with @pcrel and we won't need R2 and so the problem
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; goes away.
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define dso_local signext i32 @AsmClobberX2WithTOC(i32 signext %a, i32 signext %b) local_unnamed_addr {
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; CHECK-ALL-LABEL: AsmClobberX2WithTOC:
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; CHECK-S: addis r2, r12, .TOC.-.Lfunc_gep2@ha
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; CHECK-S-NEXT: addi r2, r2, .TOC.-.Lfunc_gep2@l
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; CHECK-S: .localentry AsmClobberX2WithTOC, .Lfunc_lep2-.Lfunc_gep2
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; CHECK-S: #APP
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; CHECK-S-NEXT: li r2, 0
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; CHECK-S-NEXT: #NO_APP
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; CHECK-S-NEXT: addis r5, r2, global_int@toc@ha
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; CHECK-S-NEXT: lwz r5, global_int@toc@l(r5)
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; CHECK-S-NEXT: add r3, r4, r3
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; CHECK-S-NEXT: add r3, r3, r5
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; CHECK-S-NEXT: extsw r3, r3
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; CHECK-S-NEXT: blr
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entry:
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%add = add nsw i32 %b, %a
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tail call void asm sideeffect "li 2, 0", "~{r2}"()
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%0 = load i32, i32* @global_int, align 4
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%add1 = add nsw i32 %add, %0
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ret i32 %add1
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}
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define dso_local signext i32 @AsmClobberX5(i32 signext %a, i32 signext %b) local_unnamed_addr {
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; CHECK-ALL-LABEL: AsmClobberX5:
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; CHECK-S: .localentry AsmClobberX5, 1
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; CHECK-P9-NOT: .localentry
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; CHECK-ALL: # %bb.0: # %entry
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; CHECK-S-NEXT: add r3, r4, r3
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; CHECK-S-NEXT: extsw r3, r3
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; CHECK-S-NEXT: #APP
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; CHECK-S-NEXT: nop
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; CHECK-S-NEXT: #NO_APP
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; CHECK-S-NEXT: blr
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entry:
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%add = add nsw i32 %b, %a
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tail call void asm sideeffect "nop", "~{r5}"()
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ret i32 %add
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}
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; Clobber all GPRs except R2.
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define dso_local signext i32 @AsmClobberNotR2(i32 signext %a, i32 signext %b) local_unnamed_addr {
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; CHECK-ALL-LABEL: AsmClobberNotR2:
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; CHECK-S: .localentry AsmClobberNotR2, 1
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; CHECK-P9-NOT: .localentry
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; CHECK-S: add r3, r4, r3
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; CHECK-S: stw r3, -148(r1) # 4-byte Folded Spill
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; CHECK-S-NEXT: #APP
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; CHECK-S-NEXT: nop
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; CHECK-S-NEXT: #NO_APP
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; CHECK-S-NEXT: lwz r3, -148(r1) # 4-byte Folded Reload
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; CHECK-S: blr
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entry:
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%add = add nsw i32 %b, %a
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tail call void asm sideeffect "nop", "~{r0},~{r1},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{r16},~{r17},~{r18},~{r19},~{r20},~{r21},~{r22},~{r23},~{r24},~{r25},~{r26},~{r27},~{r28},~{r29},~{r30},~{r31}"()
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ret i32 %add
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}
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; Increase register pressure enough to force the register allocator to
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; make use of R2.
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define dso_local signext i32 @X2IsCallerSaved(i32 signext %a, i32 signext %b, i32 signext %c, i32 signext %d, i32 signext %e, i32 signext %f, i32 signext %g, i32 signext %h) local_unnamed_addr {
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; CHECK-ALL-LABEL: X2IsCallerSaved:
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; CHECK-S: .localentry X2IsCallerSaved, 1
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; CHECK-P9-NOT: .localentry
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; CHECK-ALL: # %bb.0: # %entry
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; CHECK-S-NEXT: std r29, -24(r1) # 8-byte Folded Spill
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; CHECK-S-NEXT: add r11, r4, r3
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; CHECK-S-NEXT: subf r29, r9, r8
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; CHECK-S-NEXT: add r9, r10, r9
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; CHECK-S-NEXT: subf r10, r3, r10
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; CHECK-S-NEXT: mullw r3, r4, r3
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; CHECK-S-NEXT: mullw r3, r3, r11
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; CHECK-S-NEXT: mullw r3, r3, r5
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; CHECK-S-NEXT: subf r12, r5, r4
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; CHECK-S-NEXT: mullw r3, r3, r6
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; CHECK-S-NEXT: add r0, r6, r5
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; CHECK-S-NEXT: mullw r3, r3, r12
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; CHECK-S-NEXT: mullw r3, r3, r0
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; CHECK-S-NEXT: mullw r3, r3, r7
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; CHECK-S-NEXT: subf r2, r7, r6
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; CHECK-S-NEXT: mullw r3, r3, r8
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; CHECK-S-NEXT: std r30, -16(r1) # 8-byte Folded Spill
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; CHECK-S-NEXT: add r30, r8, r7
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; CHECK-S-NEXT: mullw r3, r3, r2
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; CHECK-S-NEXT: mullw r3, r3, r30
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; CHECK-S-NEXT: mullw r3, r3, r29
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; CHECK-S-NEXT: mullw r3, r3, r9
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; CHECK-S-NEXT: ld r30, -16(r1) # 8-byte Folded Reload
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; CHECK-S-NEXT: ld r29, -24(r1) # 8-byte Folded Reload
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; CHECK-S-NEXT: mullw r3, r3, r10
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; CHECK-S-NEXT: extsw r3, r3
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; CHECK-S-NEXT: blr
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entry:
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%add = add nsw i32 %b, %a
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%sub = sub nsw i32 %b, %c
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%add1 = add nsw i32 %d, %c
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%sub2 = sub nsw i32 %d, %e
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%add3 = add nsw i32 %f, %e
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%sub4 = sub nsw i32 %f, %g
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%add5 = add nsw i32 %h, %g
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%sub6 = sub nsw i32 %h, %a
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%mul = mul i32 %b, %a
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%mul7 = mul i32 %mul, %add
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%mul8 = mul i32 %mul7, %c
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%mul9 = mul i32 %mul8, %d
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%mul10 = mul i32 %mul9, %sub
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%mul11 = mul i32 %mul10, %add1
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%mul12 = mul i32 %mul11, %e
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%mul13 = mul i32 %mul12, %f
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%mul14 = mul i32 %mul13, %sub2
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%mul15 = mul i32 %mul14, %add3
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%mul16 = mul i32 %mul15, %sub4
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%mul17 = mul i32 %mul16, %add5
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%mul18 = mul i32 %mul17, %sub6
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ret i32 %mul18
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}
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define dso_local signext i32 @UsesX2AsTOC() local_unnamed_addr {
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; CHECK-ALL-LABEL: UsesX2AsTOC:
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; CHECK-S: addis r2, r12, .TOC.-.Lfunc_gep6@ha
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; CHECK-S-NEXT: addi r2, r2, .TOC.-.Lfunc_gep6@l
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; CHECK-S: .localentry UsesX2AsTOC, .Lfunc_lep6-.Lfunc_gep6
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; CHECK-ALL: # %bb.0: # %entry
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; CHECK-S-NEXT: addis r3, r2, global_int@toc@ha
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; CHECK-S-NEXT: lwa r3, global_int@toc@l(r3)
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; CHECK-S-NEXT: blr
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entry:
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%0 = load i32, i32* @global_int, align 4
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ret i32 %0
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}
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define dso_local double @UsesX2AsConstPoolTOC() local_unnamed_addr {
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; CHECK-ALL-LABEL: UsesX2AsConstPoolTOC:
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; CHECK-S-NOT: .localentry
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; CHECK-ALL: # %bb.0: # %entry
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; CHECK-S-NEXT: plfd f1, .LCPI7_0@PCREL(0), 1
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; CHECK-S-NEXT: blr
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entry:
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ret double 0x404124A4EBDD334C
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}
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