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102f3851bb
when the condition is constant. This optimization shouldn't be necessary, because codegen shouldn't be able to find dead control paths that the IR-level optimizer can't find. And it's undesirable, because it encourages bugpoint to leave "br i1 false" branches in its output. And it wasn't updating the CFG. I updated all the tests I could, but some tests are too reduced and I wasn't able to meaningfully preserve them. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@106748 91177308-0d34-0410-b5e6-96231b3b80d8
77 lines
3.2 KiB
LLVM
77 lines
3.2 KiB
LLVM
; RUN: llc < %s -mtriple=thumbv7-apple-darwin -mcpu=cortex-a8 -relocation-model=pic -disable-fp-elim | FileCheck %s
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; rdar://7352504
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; Make sure we use "str r9, [sp, #+28]" instead of "sub.w r4, r7, #256" followed by "str r9, [r4, #-32]".
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%0 = type { i16, i8, i8 }
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%1 = type { [2 x i32], [2 x i32] }
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%2 = type { %union.rec* }
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%struct.FILE_POS = type { i8, i8, i16, i32 }
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%struct.GAP = type { i8, i8, i16 }
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%struct.LIST = type { %union.rec*, %union.rec* }
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%struct.STYLE = type { %union.anon, %union.anon, i16, i16, i32 }
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%struct.head_type = type { [2 x %struct.LIST], %union.FIRST_UNION, %union.SECOND_UNION, %union.THIRD_UNION, %union.FOURTH_UNION, %union.rec*, %2, %union.rec*, %union.rec*, %union.rec*, %union.rec*, %union.rec*, %union.rec*, %union.rec*, %union.rec*, i32 }
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%union.FIRST_UNION = type { %struct.FILE_POS }
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%union.FOURTH_UNION = type { %struct.STYLE }
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%union.SECOND_UNION = type { %0 }
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%union.THIRD_UNION = type { %1 }
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%union.anon = type { %struct.GAP }
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%union.rec = type { %struct.head_type }
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@zz_hold = external global %union.rec* ; <%union.rec**> [#uses=2]
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@zz_res = external global %union.rec* ; <%union.rec**> [#uses=1]
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define %union.rec* @Manifest(%union.rec* %x, %union.rec* %env, %struct.STYLE* %style, %union.rec** %bthr, %union.rec** %fthr, %union.rec** %target, %union.rec** %crs, i32 %ok, i32 %need_expand, %union.rec** %enclose, i32 %fcr) nounwind {
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entry:
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; CHECK: ldr.w r9, [r7, #28]
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%xgaps.i = alloca [32 x %union.rec*], align 4 ; <[32 x %union.rec*]*> [#uses=0]
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%ycomp.i = alloca [32 x %union.rec*], align 4 ; <[32 x %union.rec*]*> [#uses=0]
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br label %bb20
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bb20: ; preds = %entry
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switch i32 undef, label %bb1287 [
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i32 11, label %bb119
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i32 12, label %bb119
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i32 21, label %bb420
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i32 23, label %bb420
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i32 45, label %bb438
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i32 46, label %bb438
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i32 55, label %bb533
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i32 56, label %bb569
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i32 64, label %bb745
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i32 78, label %bb1098
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]
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bb119: ; preds = %bb20, %bb20
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unreachable
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bb420: ; preds = %bb20, %bb20
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; CHECK: bb420
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; CHECK: str r{{[0-7]}}, [sp]
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; CHECK: str r{{[0-7]}}, [sp, #4]
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; CHECK: str r{{[0-7]}}, [sp, #8]
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; CHECK: str{{(.w)?}} r{{[0-9]+}}, [sp, #24]
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store %union.rec* null, %union.rec** @zz_hold, align 4
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store %union.rec* null, %union.rec** @zz_res, align 4
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store %union.rec* %x, %union.rec** @zz_hold, align 4
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%0 = call %union.rec* @Manifest(%union.rec* undef, %union.rec* %env, %struct.STYLE* %style, %union.rec** %bthr, %union.rec** %fthr, %union.rec** %target, %union.rec** %crs, i32 %ok, i32 %need_expand, %union.rec** %enclose, i32 %fcr) nounwind ; <%union.rec*> [#uses=0]
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unreachable
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bb438: ; preds = %bb20, %bb20
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unreachable
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bb533: ; preds = %bb20
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ret %union.rec* %x
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bb569: ; preds = %bb20
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unreachable
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bb745: ; preds = %bb20
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unreachable
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bb1098: ; preds = %bb20
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unreachable
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bb1287: ; preds = %bb20
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unreachable
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}
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