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7dcf1654f8
Based ontop of D104598, which is a NFCI-ish refactoring. Here, a restriction, that only empty blocks can be merged, is lifted. Reviewed By: rnk Differential Revision: https://reviews.llvm.org/D104597
54 lines
1.5 KiB
LLVM
54 lines
1.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc -march=hexagon -O2 < %s | FileCheck %s
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; Check that we don't generate .falign directives after function calls at O2.
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; We need more than one basic block for this test because MachineBlockPlacement
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; will not run on single basic block functions.
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declare i32 @f0()
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; We don't want faligns after the calls to foo.
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define i32 @f1(i32 %a0) #0 {
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; CHECK-LABEL: f1:
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; CHECK: // %bb.0: // %b0
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; CHECK-NEXT: {
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; CHECK-NEXT: if (!p0.new) r0 = add(r0,#5)
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; CHECK-NEXT: p0 = cmp.eq(r0,#0)
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; CHECK-NEXT: if (!p0.new) jumpr:nt r31
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; CHECK-NEXT: }
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; CHECK-NEXT: .LBB0_1: // %b1
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; CHECK-NEXT: {
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; CHECK-NEXT: call f0
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; CHECK-NEXT: memd(r29+#-16) = r17:16
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; CHECK-NEXT: allocframe(#8)
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; CHECK-NEXT: } // 8-byte Folded Spill
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; CHECK-NEXT: {
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; CHECK-NEXT: call f0
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; CHECK-NEXT: r16 = r0
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; CHECK-NEXT: }
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; CHECK-NEXT: {
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; CHECK-NEXT: r0 = add(r16,r0)
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; CHECK-NEXT: r17:16 = memd(r29+#0)
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; CHECK-NEXT: deallocframe
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; CHECK-NEXT: } // 8-byte Folded Reload
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; CHECK-NEXT: {
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; CHECK-NEXT: jumpr r31
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; CHECK-NEXT: }
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b0:
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%v0 = icmp eq i32 %a0, 0
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br i1 %v0, label %b1, label %b2
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b1: ; preds = %b0
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%v1 = call i32 @f0()
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%v2 = call i32 @f0()
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%v3 = add i32 %v1, %v2
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ret i32 %v3
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b2: ; preds = %b0
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%v4 = add i32 %a0, 5
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ret i32 %v4
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}
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attributes #0 = { nounwind }
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