; RUN: llc < %s -mtriple=i386-apple-darwin -relocation-model=pic -disable-fp-elim | FileCheck %s -check-prefix=X86-32 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -relocation-model=pic -disable-fp-elim | FileCheck %s -check-prefix=X86-64 ; MachineLICM should be able to hoist loop invariant reload out of the loop. ; Only linear scan needs this, -regalloc=greedy sinks the spill instead. ; rdar://7233099 %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 } %struct.__sFILEX = type opaque %struct.__sbuf = type { i8*, i32 } %struct.epoch_t = type { %struct.trans_t*, %struct.trans_t*, i32, i32, i32, i32, i32 } %struct.trans_t = type { i32, i32, i32, i8* } @.str12 = external constant [2 x i8], align 1 ; <[2 x i8]*> [#uses=1] @.str19 = external constant [7 x i8], align 1 ; <[7 x i8]*> [#uses=1] @.str24 = external constant [4 x i8], align 1 ; <[4 x i8]*> [#uses=1] define i32 @t1(i32 %c, i8** nocapture %v) nounwind ssp { ; X86-32: t1: entry: br i1 undef, label %bb, label %bb3 bb: ; preds = %entry unreachable bb3: ; preds = %entry br i1 undef, label %bb.i, label %bb.nph41 bb.i: ; preds = %bb3 unreachable bb.nph41: ; preds = %bb3 %0 = call %struct.FILE* @"\01_fopen$UNIX2003"(i8* undef, i8* getelementptr inbounds ([2 x i8]* @.str12, i32 0, i32 0)) nounwind ; <%struct.FILE*> [#uses=3] br i1 undef, label %bb4, label %bb5.preheader bb5.preheader: ; preds = %bb.nph41 br label %bb5 bb4: ; preds = %bb.nph41 unreachable bb5: ; preds = %bb5, %bb5.preheader br i1 undef, label %bb7, label %bb5 bb7: ; preds = %bb5 br i1 undef, label %bb9, label %bb12 bb9: ; preds = %bb7 unreachable bb12: ; preds = %bb7 br i1 undef, label %bb16, label %bb22 bb16: ; preds = %bb12 unreachable bb22: ; preds = %bb12 br label %bb.i1 bb.i1: ; preds = %bb.i1, %bb22 %1 = icmp eq i8 undef, 69 ; <i1> [#uses=1] br i1 %1, label %imix_test.exit, label %bb.i1 imix_test.exit: ; preds = %bb.i1 br i1 undef, label %bb23, label %bb26.preheader bb26.preheader: ; preds = %imix_test.exit br i1 undef, label %bb28, label %bb30 bb23: ; preds = %imix_test.exit unreachable ; Verify that there are no loads inside the loop. ; X86-32: %bb26.preheader ; X86-32: .align 4 ; X86-32-NOT: (%esp), ; X86-32-NOT: (%ebp), ; X86-32: jmp bb28: ; preds = %bb28, %bb26.preheader %counter.035 = phi i32 [ %3, %bb28 ], [ 0, %bb26.preheader ] ; <i32> [#uses=2] %tmp56 = shl i32 %counter.035, 2 ; <i32> [#uses=0] %2 = call i8* @fgets(i8* undef, i32 50, %struct.FILE* %0) nounwind ; <i8*> [#uses=0] %3 = add nsw i32 %counter.035, 1 ; <i32> [#uses=1] %4 = call i32 @feof(%struct.FILE* %0) nounwind ; <i32> [#uses=0] br label %bb28 bb30: ; preds = %bb26.preheader %5 = call i32 @strcmp(i8* undef, i8* getelementptr inbounds ([7 x i8]* @.str19, i32 0, i32 0)) nounwind readonly ; <i32> [#uses=0] br i1 undef, label %bb34, label %bb70 bb32.loopexit: ; preds = %bb45 %6 = icmp eq i32 undef, 0 ; <i1> [#uses=1] %indvar.next55 = add i32 %indvar54, 1 ; <i32> [#uses=1] br i1 %6, label %bb34, label %bb70 bb34: ; preds = %bb32.loopexit, %bb30 %indvar54 = phi i32 [ %indvar.next55, %bb32.loopexit ], [ 0, %bb30 ] ; <i32> [#uses=3] br i1 false, label %bb35, label %bb39.preheader bb35: ; preds = %bb34 unreachable bb39.preheader: ; preds = %bb34 %7 = getelementptr inbounds %struct.epoch_t* undef, i32 %indvar54, i32 3 ; <i32*> [#uses=1] %8 = getelementptr inbounds %struct.epoch_t* undef, i32 %indvar54, i32 2 ; <i32*> [#uses=0] br i1 false, label %bb42, label %bb45 bb42: ; preds = %bb39.preheader unreachable bb45: ; preds = %bb39.preheader %9 = call i32 @strcmp(i8* undef, i8* getelementptr inbounds ([4 x i8]* @.str24, i32 0, i32 0)) nounwind readonly ; <i32> [#uses=0] br i1 false, label %bb47, label %bb32.loopexit bb47: ; preds = %bb45 %10 = load i32* %7, align 4 ; <i32> [#uses=0] unreachable bb70: ; preds = %bb32.loopexit, %bb30 br i1 undef, label %bb78, label %bb76 bb76: ; preds = %bb70 unreachable bb78: ; preds = %bb70 br i1 undef, label %bb83, label %bb79 bb79: ; preds = %bb78 unreachable bb83: ; preds = %bb78 call void @rewind(%struct.FILE* %0) nounwind unreachable } declare %struct.FILE* @"\01_fopen$UNIX2003"(i8*, i8*) declare i8* @fgets(i8*, i32, %struct.FILE* nocapture) nounwind declare void @rewind(%struct.FILE* nocapture) nounwind declare i32 @feof(%struct.FILE* nocapture) nounwind declare i32 @strcmp(i8* nocapture, i8* nocapture) nounwind readonly @map_4_to_16 = external constant [16 x i16], align 32 ; <[16 x i16]*> [#uses=2] define void @t2(i8* nocapture %bufp, i8* nocapture %data, i32 %dsize) nounwind ssp { ; X86-64: t2: entry: br i1 undef, label %return, label %bb.nph bb.nph: ; preds = %entry ; X86-64: movq _map_4_to_16@GOTPCREL(%rip) ; X86-64: .align 4 %tmp5 = zext i32 undef to i64 ; <i64> [#uses=1] %tmp6 = add i64 %tmp5, 1 ; <i64> [#uses=1] %tmp11 = shl i64 undef, 1 ; <i64> [#uses=1] %tmp14 = mul i64 undef, 3 ; <i64> [#uses=1] br label %bb bb: ; preds = %bb, %bb.nph %tmp9 = mul i64 undef, undef ; <i64> [#uses=2] %tmp12 = add i64 %tmp11, %tmp9 ; <i64> [#uses=1] %scevgep13 = getelementptr i8* %bufp, i64 %tmp12 ; <i8*> [#uses=1] %tmp15 = add i64 %tmp14, %tmp9 ; <i64> [#uses=1] %scevgep16 = getelementptr i8* %bufp, i64 %tmp15 ; <i8*> [#uses=1] %0 = load i8* undef, align 1 ; <i8> [#uses=1] %1 = zext i8 %0 to i32 ; <i32> [#uses=1] %2 = getelementptr inbounds [16 x i16]* @map_4_to_16, i64 0, i64 0 ; <i16*> [#uses=1] %3 = load i16* %2, align 2 ; <i16> [#uses=1] %4 = trunc i16 %3 to i8 ; <i8> [#uses=1] store i8 %4, i8* undef, align 1 %5 = and i32 %1, 15 ; <i32> [#uses=1] %6 = zext i32 %5 to i64 ; <i64> [#uses=1] %7 = getelementptr inbounds [16 x i16]* @map_4_to_16, i64 0, i64 %6 ; <i16*> [#uses=1] %8 = load i16* %7, align 2 ; <i16> [#uses=2] %9 = lshr i16 %8, 8 ; <i16> [#uses=1] %10 = trunc i16 %9 to i8 ; <i8> [#uses=1] store i8 %10, i8* %scevgep13, align 1 %11 = trunc i16 %8 to i8 ; <i8> [#uses=1] store i8 %11, i8* %scevgep16, align 1 %exitcond = icmp eq i64 undef, %tmp6 ; <i1> [#uses=1] br i1 %exitcond, label %return, label %bb return: ; preds = %bb, %entry ret void }