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a72e83c26e
For historic reasons, the behavior of .align differs between targets. Fortunately, there are alternatives, .p2align and .balign, which make the interpretation of the parameter explicit, and which behave consistently across targets. This patch teaches MC to use .p2align instead of .align, so that people reading code for multiple architectures don't have to remember which way each platform does its .align directive. Differential Revision: http://reviews.llvm.org/D16549 llvm-svn: 258750
189 lines
8.2 KiB
LLVM
189 lines
8.2 KiB
LLVM
; RUN: llc < %s -mtriple=i386-apple-darwin -relocation-model=pic -disable-fp-elim | FileCheck %s -check-prefix=X86-32
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; RUN: llc < %s -mtriple=x86_64-apple-darwin -relocation-model=pic -disable-fp-elim | FileCheck %s -check-prefix=X86-64
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; MachineLICM should be able to hoist loop invariant reload out of the loop.
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; Only linear scan needs this, -regalloc=greedy sinks the spill instead.
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; rdar://7233099
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%struct.FILE = type { i8*, i32, i32, i16, i16, %struct.__sbuf, i32, i8*, i32 (i8*)*, i32 (i8*, i8*, i32)*, i64 (i8*, i64, i32)*, i32 (i8*, i8*, i32)*, %struct.__sbuf, %struct.__sFILEX*, i32, [3 x i8], [1 x i8], %struct.__sbuf, i32, i64 }
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%struct.__sFILEX = type opaque
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%struct.__sbuf = type { i8*, i32 }
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%struct.epoch_t = type { %struct.trans_t*, %struct.trans_t*, i32, i32, i32, i32, i32 }
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%struct.trans_t = type { i32, i32, i32, i8* }
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@.str12 = external constant [2 x i8], align 1 ; <[2 x i8]*> [#uses=1]
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@.str19 = external constant [7 x i8], align 1 ; <[7 x i8]*> [#uses=1]
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@.str24 = external constant [4 x i8], align 1 ; <[4 x i8]*> [#uses=1]
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define i32 @t1(i32 %c, i8** nocapture %v) nounwind ssp {
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; X86-32-LABEL: t1:
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entry:
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br i1 undef, label %bb, label %bb3
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bb: ; preds = %entry
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unreachable
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bb3: ; preds = %entry
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br i1 undef, label %bb.i, label %bb.nph41
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bb.i: ; preds = %bb3
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unreachable
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bb.nph41: ; preds = %bb3
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%0 = call %struct.FILE* @"\01_fopen$UNIX2003"(i8* undef, i8* getelementptr inbounds ([2 x i8], [2 x i8]* @.str12, i32 0, i32 0)) nounwind ; <%struct.FILE*> [#uses=3]
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br i1 undef, label %bb4, label %bb5.preheader
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bb5.preheader: ; preds = %bb.nph41
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br label %bb5
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bb4: ; preds = %bb.nph41
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unreachable
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bb5: ; preds = %bb5, %bb5.preheader
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br i1 undef, label %bb7, label %bb5
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bb7: ; preds = %bb5
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br i1 undef, label %bb9, label %bb12
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bb9: ; preds = %bb7
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unreachable
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bb12: ; preds = %bb7
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br i1 undef, label %bb16, label %bb22
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bb16: ; preds = %bb12
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unreachable
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bb22: ; preds = %bb12
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br label %bb.i1
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bb.i1: ; preds = %bb.i1, %bb22
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%1 = icmp eq i8 undef, 69 ; <i1> [#uses=1]
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br i1 %1, label %imix_test.exit, label %bb.i1
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imix_test.exit: ; preds = %bb.i1
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br i1 undef, label %bb23, label %bb26.preheader
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bb26.preheader: ; preds = %imix_test.exit
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br i1 undef, label %bb28, label %bb30
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bb23: ; preds = %imix_test.exit
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unreachable
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; Verify that there are no loads inside the loop.
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; X86-32: .p2align 4
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; X86-32: %bb28
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; X86-32-NOT: (%esp),
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; X86-32-NOT: (%ebp),
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; X86-32: jmp
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bb28: ; preds = %bb28, %bb26.preheader
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%counter.035 = phi i32 [ %3, %bb28 ], [ 0, %bb26.preheader ] ; <i32> [#uses=2]
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%tmp56 = shl i32 %counter.035, 2 ; <i32> [#uses=0]
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%2 = call i8* @fgets(i8* undef, i32 50, %struct.FILE* %0) nounwind ; <i8*> [#uses=0]
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%3 = add nsw i32 %counter.035, 1 ; <i32> [#uses=1]
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%4 = call i32 @feof(%struct.FILE* %0) nounwind ; <i32> [#uses=0]
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br label %bb28
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bb30: ; preds = %bb26.preheader
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%5 = call i32 @strcmp(i8* undef, i8* getelementptr inbounds ([7 x i8], [7 x i8]* @.str19, i32 0, i32 0)) nounwind readonly ; <i32> [#uses=0]
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br i1 undef, label %bb34, label %bb70
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bb32.loopexit: ; preds = %bb45
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%6 = icmp eq i32 undef, 0 ; <i1> [#uses=1]
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%indvar.next55 = add i32 %indvar54, 1 ; <i32> [#uses=1]
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br i1 %6, label %bb34, label %bb70
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bb34: ; preds = %bb32.loopexit, %bb30
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%indvar54 = phi i32 [ %indvar.next55, %bb32.loopexit ], [ 0, %bb30 ] ; <i32> [#uses=3]
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br i1 false, label %bb35, label %bb39.preheader
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bb35: ; preds = %bb34
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unreachable
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bb39.preheader: ; preds = %bb34
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%7 = getelementptr inbounds %struct.epoch_t, %struct.epoch_t* undef, i32 %indvar54, i32 3 ; <i32*> [#uses=1]
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%8 = getelementptr inbounds %struct.epoch_t, %struct.epoch_t* undef, i32 %indvar54, i32 2 ; <i32*> [#uses=0]
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br i1 false, label %bb42, label %bb45
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bb42: ; preds = %bb39.preheader
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unreachable
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bb45: ; preds = %bb39.preheader
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%9 = call i32 @strcmp(i8* undef, i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str24, i32 0, i32 0)) nounwind readonly ; <i32> [#uses=0]
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br i1 false, label %bb47, label %bb32.loopexit
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bb47: ; preds = %bb45
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%10 = load i32, i32* %7, align 4 ; <i32> [#uses=0]
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unreachable
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bb70: ; preds = %bb32.loopexit, %bb30
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br i1 undef, label %bb78, label %bb76
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bb76: ; preds = %bb70
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unreachable
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bb78: ; preds = %bb70
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br i1 undef, label %bb83, label %bb79
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bb79: ; preds = %bb78
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unreachable
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bb83: ; preds = %bb78
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call void @rewind(%struct.FILE* %0) nounwind
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unreachable
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}
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declare %struct.FILE* @"\01_fopen$UNIX2003"(i8*, i8*)
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declare i8* @fgets(i8*, i32, %struct.FILE* nocapture) nounwind
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declare void @rewind(%struct.FILE* nocapture) nounwind
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declare i32 @feof(%struct.FILE* nocapture) nounwind
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declare i32 @strcmp(i8* nocapture, i8* nocapture) nounwind readonly
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@map_4_to_16 = external constant [16 x i16], align 32 ; <[16 x i16]*> [#uses=2]
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define void @t2(i8* nocapture %bufp, i8* nocapture %data, i32 %dsize) nounwind ssp {
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; X86-64-LABEL: t2:
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entry:
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br i1 undef, label %return, label %bb.nph
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bb.nph: ; preds = %entry
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; X86-64: movq _map_4_to_16@GOTPCREL(%rip)
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; X86-64: .p2align 4
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%tmp5 = zext i32 undef to i64 ; <i64> [#uses=1]
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%tmp6 = add i64 %tmp5, 1 ; <i64> [#uses=1]
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%tmp11 = shl i64 undef, 1 ; <i64> [#uses=1]
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%tmp14 = mul i64 undef, 3 ; <i64> [#uses=1]
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br label %bb
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bb: ; preds = %bb, %bb.nph
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%tmp9 = mul i64 undef, undef ; <i64> [#uses=2]
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%tmp12 = add i64 %tmp11, %tmp9 ; <i64> [#uses=1]
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%scevgep13 = getelementptr i8, i8* %bufp, i64 %tmp12 ; <i8*> [#uses=1]
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%tmp15 = add i64 %tmp14, %tmp9 ; <i64> [#uses=1]
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%scevgep16 = getelementptr i8, i8* %bufp, i64 %tmp15 ; <i8*> [#uses=1]
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%0 = load i8, i8* undef, align 1 ; <i8> [#uses=1]
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%1 = zext i8 %0 to i32 ; <i32> [#uses=1]
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%2 = getelementptr inbounds [16 x i16], [16 x i16]* @map_4_to_16, i64 0, i64 0 ; <i16*> [#uses=1]
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%3 = load i16, i16* %2, align 2 ; <i16> [#uses=1]
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%4 = trunc i16 %3 to i8 ; <i8> [#uses=1]
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store i8 %4, i8* undef, align 1
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%5 = and i32 %1, 15 ; <i32> [#uses=1]
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%6 = zext i32 %5 to i64 ; <i64> [#uses=1]
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%7 = getelementptr inbounds [16 x i16], [16 x i16]* @map_4_to_16, i64 0, i64 %6 ; <i16*> [#uses=1]
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%8 = load i16, i16* %7, align 2 ; <i16> [#uses=2]
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%9 = lshr i16 %8, 8 ; <i16> [#uses=1]
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%10 = trunc i16 %9 to i8 ; <i8> [#uses=1]
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store i8 %10, i8* %scevgep13, align 1
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%11 = trunc i16 %8 to i8 ; <i8> [#uses=1]
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store i8 %11, i8* %scevgep16, align 1
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%exitcond = icmp eq i64 undef, %tmp6 ; <i1> [#uses=1]
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br i1 %exitcond, label %return, label %bb
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return: ; preds = %bb, %entry
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ret void
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}
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