ce52b80744
This patch causes compile times for some patterns to explode. I have a (large, unreduced) test case that slows down by more than 20x and several test cases slow down by 2x. I'm sending some of the test cases directly to Nirav and following up with more details in the review log, but this should unblock anyone else hitting this. llvm-svn: 296862
56 lines
1.2 KiB
LLVM
56 lines
1.2 KiB
LLVM
; RUN: llc < %s -march=xcore | FileCheck %s
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define void @_Z1fz(...) {
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entry:
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; CHECK-LABEL: _Z1fz:
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; CHECK: extsp 3
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; CHECK: stw r[[REG:[0-3]{1,1}]]
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; CHECK: , sp{{\[}}[[REG]]{{\]}}
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; CHECK: stw r[[REG:[0-3]{1,1}]]
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; CHECK: , sp{{\[}}[[REG]]{{\]}}
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; CHECK: stw r[[REG:[0-3]{1,1}]]
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; CHECK: , sp{{\[}}[[REG]]{{\]}}
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; CHECK: stw r[[REG:[0-3]{1,1}]]
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; CHECK: , sp{{\[}}[[REG]]{{\]}}
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; CHECK: ldaw sp, sp[3]
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; CHECK: retsp 0
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ret void
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}
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declare void @llvm.va_start(i8*) nounwind
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declare void @llvm.va_end(i8*) nounwind
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declare void @f(i32) nounwind
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define void @test_vararg(...) nounwind {
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entry:
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; CHECK-LABEL: test_vararg
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; CHECK: extsp 6
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; CHECK: stw lr, sp[1]
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; CHECK: stw r0, sp[3]
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; CHECK: stw r1, sp[4]
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; CHECK: stw r2, sp[5]
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; CHECK: stw r3, sp[6]
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; CHECK: ldaw r0, sp[3]
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; CHECK: stw r0, sp[2]
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%list = alloca i8*, align 4
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%list1 = bitcast i8** %list to i8*
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call void @llvm.va_start(i8* %list1)
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br label %for.cond
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; CHECK-LABEL: .LBB1_1
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; CHECK: ldw r0, sp[2]
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; CHECK: add r1, r0, 4
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; CHECK: stw r1, sp[2]
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; CHECK: ldw r0, r0[0]
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; CHECK: bl f
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; CHECK: bu .LBB1_1
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for.cond:
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%0 = va_arg i8** %list, i32
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call void @f(i32 %0)
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br label %for.cond
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call void @llvm.va_end(i8* %list1)
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ret void
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}
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