; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -passes=instcombine -S | FileCheck %s ; RUN: opt -passes=debugify,instcombine -S < %s | FileCheck %s -check-prefix DBGINFO ; FIXME RemoveDIs project: instcombine instruction sinking, and the ; corresponding debug-info updates that are required, are not yet implemented. ; run: opt -passes=debugify,instcombine -S < %s --try-experimental-debuginfo-iterators | FileCheck %s -check-prefix DBGINFO target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32" define i32 @mul(i32 %x, i32 %y) { ; CHECK-LABEL: @mul( ; CHECK-NEXT: [[C:%.*]] = mul i32 [[X:%.*]], [[Y:%.*]] ; CHECK-NEXT: [[D:%.*]] = and i32 [[C]], 255 ; CHECK-NEXT: ret i32 [[D]] ; ; DBGINFO-LABEL: @mul( ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[X:%.*]], metadata [[META9:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_stack_value)), !dbg [[DBG15:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[Y:%.*]], metadata [[META11:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_stack_value)), !dbg [[DBG16:![0-9]+]] ; DBGINFO-NEXT: [[C:%.*]] = mul i32 [[X]], [[Y]], !dbg [[DBG17:![0-9]+]] ; DBGINFO-NEXT: [[D:%.*]] = and i32 [[C]], 255, !dbg [[DBG18:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[C]], metadata [[META12:![0-9]+]], metadata !DIExpression()), !dbg [[DBG17]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[D]], metadata [[META13:![0-9]+]], metadata !DIExpression()), !dbg [[DBG18]] ; DBGINFO-NEXT: ret i32 [[D]], !dbg [[DBG19:![0-9]+]] ; ; Test that when zext is evaluated in different type ; we preserve the debug information in the resulting ; instruction. %A = trunc i32 %x to i8 %B = trunc i32 %y to i8 %C = mul i8 %A, %B %D = zext i8 %C to i32 ret i32 %D } define i32 @select1(i1 %cond, i32 %x, i32 %y, i32 %z) { ; CHECK-LABEL: @select1( ; CHECK-NEXT: [[D:%.*]] = add i32 [[X:%.*]], [[Y:%.*]] ; CHECK-NEXT: [[E:%.*]] = select i1 [[COND:%.*]], i32 [[Z:%.*]], i32 [[D]] ; CHECK-NEXT: [[F:%.*]] = and i32 [[E]], 255 ; CHECK-NEXT: ret i32 [[F]] ; ; DBGINFO-LABEL: @select1( ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[X:%.*]], metadata [[META22:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_stack_value)), !dbg [[DBG28:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[Y:%.*]], metadata [[META23:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_stack_value)), !dbg [[DBG29:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[Z:%.*]], metadata [[META24:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_stack_value)), !dbg [[DBG30:![0-9]+]] ; DBGINFO-NEXT: [[D:%.*]] = add i32 [[X]], [[Y]], !dbg [[DBG31:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata !DIArgList(i32 [[X]], i32 [[Y]]), metadata [[META25:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_LLVM_arg, 1, DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_plus, DW_OP_stack_value)), !dbg [[DBG31]] ; DBGINFO-NEXT: [[E:%.*]] = select i1 [[COND:%.*]], i32 [[Z]], i32 [[D]], !dbg [[DBG32:![0-9]+]] ; DBGINFO-NEXT: [[F:%.*]] = and i32 [[E]], 255, !dbg [[DBG33:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[E]], metadata [[META26:![0-9]+]], metadata !DIExpression()), !dbg [[DBG32]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[F]], metadata [[META27:![0-9]+]], metadata !DIExpression()), !dbg [[DBG33]] ; DBGINFO-NEXT: ret i32 [[F]], !dbg [[DBG34:![0-9]+]] ; %A = trunc i32 %x to i8 %B = trunc i32 %y to i8 %C = trunc i32 %z to i8 %D = add i8 %A, %B %E = select i1 %cond, i8 %C, i8 %D %F = zext i8 %E to i32 ret i32 %F } define i8 @select2(i1 %cond, i8 %x, i8 %y, i8 %z) { ; CHECK-LABEL: @select2( ; CHECK-NEXT: [[D:%.*]] = add i8 [[X:%.*]], [[Y:%.*]] ; CHECK-NEXT: [[E:%.*]] = select i1 [[COND:%.*]], i8 [[Z:%.*]], i8 [[D]] ; CHECK-NEXT: ret i8 [[E]] ; ; DBGINFO-LABEL: @select2( ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i8 [[X:%.*]], metadata [[META37:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_stack_value)), !dbg [[DBG43:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i8 [[Y:%.*]], metadata [[META38:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_stack_value)), !dbg [[DBG44:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i8 [[Z:%.*]], metadata [[META39:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_stack_value)), !dbg [[DBG45:![0-9]+]] ; DBGINFO-NEXT: [[D:%.*]] = add i8 [[X]], [[Y]], !dbg [[DBG46:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata !DIArgList(i8 [[X]], i8 [[Y]]), metadata [[META40:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_LLVM_arg, 1, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_LLVM_convert, 32, DW_ATE_unsigned, DW_OP_plus, DW_OP_stack_value)), !dbg [[DBG46]] ; DBGINFO-NEXT: [[E:%.*]] = select i1 [[COND:%.*]], i8 [[Z]], i8 [[D]], !dbg [[DBG47:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 poison, metadata [[META41:![0-9]+]], metadata !DIExpression()), !dbg [[DBG47]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i8 [[E]], metadata [[META42:![0-9]+]], metadata !DIExpression()), !dbg [[DBG48:![0-9]+]] ; DBGINFO-NEXT: ret i8 [[E]], !dbg [[DBG49:![0-9]+]] ; %A = zext i8 %x to i32 %B = zext i8 %y to i32 %C = zext i8 %z to i32 %D = add i32 %A, %B %E = select i1 %cond, i32 %C, i32 %D %F = trunc i32 %E to i8 ret i8 %F } ; The next 3 tests could be handled in instcombine, but evaluating values ; with multiple uses may be very slow. Let some other pass deal with it. define i32 @eval_trunc_multi_use_in_one_inst(i32 %x) { ; CHECK-LABEL: @eval_trunc_multi_use_in_one_inst( ; CHECK-NEXT: [[Z:%.*]] = zext i32 [[X:%.*]] to i64 ; CHECK-NEXT: [[A:%.*]] = add nuw nsw i64 [[Z]], 15 ; CHECK-NEXT: [[M:%.*]] = mul i64 [[A]], [[A]] ; CHECK-NEXT: [[T:%.*]] = trunc i64 [[M]] to i32 ; CHECK-NEXT: ret i32 [[T]] ; ; DBGINFO-LABEL: @eval_trunc_multi_use_in_one_inst( ; DBGINFO-NEXT: [[Z:%.*]] = zext i32 [[X:%.*]] to i64, !dbg [[DBG57:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i64 [[Z]], metadata [[META52:![0-9]+]], metadata !DIExpression()), !dbg [[DBG57]] ; DBGINFO-NEXT: [[A:%.*]] = add nuw nsw i64 [[Z]], 15, !dbg [[DBG58:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i64 [[A]], metadata [[META54:![0-9]+]], metadata !DIExpression()), !dbg [[DBG58]] ; DBGINFO-NEXT: [[M:%.*]] = mul i64 [[A]], [[A]], !dbg [[DBG59:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i64 [[M]], metadata [[META55:![0-9]+]], metadata !DIExpression()), !dbg [[DBG59]] ; DBGINFO-NEXT: [[T:%.*]] = trunc i64 [[M]] to i32, !dbg [[DBG60:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[T]], metadata [[META56:![0-9]+]], metadata !DIExpression()), !dbg [[DBG60]] ; DBGINFO-NEXT: ret i32 [[T]], !dbg [[DBG61:![0-9]+]] ; %z = zext i32 %x to i64 %a = add nsw nuw i64 %z, 15 %m = mul i64 %a, %a %t = trunc i64 %m to i32 ret i32 %t } define i32 @eval_zext_multi_use_in_one_inst(i32 %x) { ; CHECK-LABEL: @eval_zext_multi_use_in_one_inst( ; CHECK-NEXT: [[T:%.*]] = trunc i32 [[X:%.*]] to i16 ; CHECK-NEXT: [[A:%.*]] = and i16 [[T]], 5 ; CHECK-NEXT: [[M:%.*]] = mul nuw nsw i16 [[A]], [[A]] ; CHECK-NEXT: [[R:%.*]] = zext nneg i16 [[M]] to i32 ; CHECK-NEXT: ret i32 [[R]] ; ; DBGINFO-LABEL: @eval_zext_multi_use_in_one_inst( ; DBGINFO-NEXT: [[T:%.*]] = trunc i32 [[X:%.*]] to i16, !dbg [[DBG69:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i16 [[T]], metadata [[META64:![0-9]+]], metadata !DIExpression()), !dbg [[DBG69]] ; DBGINFO-NEXT: [[A:%.*]] = and i16 [[T]], 5, !dbg [[DBG70:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i16 [[A]], metadata [[META66:![0-9]+]], metadata !DIExpression()), !dbg [[DBG70]] ; DBGINFO-NEXT: [[M:%.*]] = mul nuw nsw i16 [[A]], [[A]], !dbg [[DBG71:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i16 [[M]], metadata [[META67:![0-9]+]], metadata !DIExpression()), !dbg [[DBG71]] ; DBGINFO-NEXT: [[R:%.*]] = zext nneg i16 [[M]] to i32, !dbg [[DBG72:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[R]], metadata [[META68:![0-9]+]], metadata !DIExpression()), !dbg [[DBG72]] ; DBGINFO-NEXT: ret i32 [[R]], !dbg [[DBG73:![0-9]+]] ; %t = trunc i32 %x to i16 %a = and i16 %t, 5 %m = mul nuw nsw i16 %a, %a %r = zext i16 %m to i32 ret i32 %r } define i32 @eval_sext_multi_use_in_one_inst(i32 %x) { ; CHECK-LABEL: @eval_sext_multi_use_in_one_inst( ; CHECK-NEXT: [[T:%.*]] = trunc i32 [[X:%.*]] to i16 ; CHECK-NEXT: [[A:%.*]] = and i16 [[T]], 14 ; CHECK-NEXT: [[M:%.*]] = mul nuw nsw i16 [[A]], [[A]] ; CHECK-NEXT: [[O:%.*]] = or disjoint i16 [[M]], -32768 ; CHECK-NEXT: [[R:%.*]] = sext i16 [[O]] to i32 ; CHECK-NEXT: ret i32 [[R]] ; ; DBGINFO-LABEL: @eval_sext_multi_use_in_one_inst( ; DBGINFO-NEXT: [[T:%.*]] = trunc i32 [[X:%.*]] to i16, !dbg [[DBG81:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i16 [[T]], metadata [[META76:![0-9]+]], metadata !DIExpression()), !dbg [[DBG81]] ; DBGINFO-NEXT: [[A:%.*]] = and i16 [[T]], 14, !dbg [[DBG82:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i16 [[A]], metadata [[META77:![0-9]+]], metadata !DIExpression()), !dbg [[DBG82]] ; DBGINFO-NEXT: [[M:%.*]] = mul nuw nsw i16 [[A]], [[A]], !dbg [[DBG83:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i16 [[M]], metadata [[META78:![0-9]+]], metadata !DIExpression()), !dbg [[DBG83]] ; DBGINFO-NEXT: [[O:%.*]] = or disjoint i16 [[M]], -32768, !dbg [[DBG84:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i16 [[O]], metadata [[META79:![0-9]+]], metadata !DIExpression()), !dbg [[DBG84]] ; DBGINFO-NEXT: [[R:%.*]] = sext i16 [[O]] to i32, !dbg [[DBG85:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[R]], metadata [[META80:![0-9]+]], metadata !DIExpression()), !dbg [[DBG85]] ; DBGINFO-NEXT: ret i32 [[R]], !dbg [[DBG86:![0-9]+]] ; %t = trunc i32 %x to i16 %a = and i16 %t, 14 %m = mul nuw nsw i16 %a, %a %o = or i16 %m, 32768 %r = sext i16 %o to i32 ret i32 %r } ; If we have a transform to shrink the above 3 cases, make sure it's not ; also trying to look through multiple uses in this test and crashing. define void @PR36225(i32 %a, i32 %b, i1 %c1, i3 %v1, i3 %v2) { ; CHECK-LABEL: @PR36225( ; CHECK-NEXT: entry: ; CHECK-NEXT: br label [[WHILE_BODY:%.*]] ; CHECK: while.body: ; CHECK-NEXT: br i1 [[C1:%.*]], label [[FOR_BODY3_US:%.*]], label [[FOR_BODY3:%.*]] ; CHECK: for.body3.us: ; CHECK-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[B:%.*]], 0 ; CHECK-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i8 0, i8 4 ; CHECK-NEXT: switch i3 [[V1:%.*]], label [[EXIT:%.*]] [ ; CHECK-NEXT: i3 0, label [[FOR_END:%.*]] ; CHECK-NEXT: i3 -1, label [[FOR_END]] ; CHECK-NEXT: ] ; CHECK: for.body3: ; CHECK-NEXT: switch i3 [[V2:%.*]], label [[EXIT]] [ ; CHECK-NEXT: i3 0, label [[FOR_END]] ; CHECK-NEXT: i3 -1, label [[FOR_END]] ; CHECK-NEXT: ] ; CHECK: for.end: ; CHECK-NEXT: [[H:%.*]] = phi i8 [ [[SPEC_SELECT]], [[FOR_BODY3_US]] ], [ [[SPEC_SELECT]], [[FOR_BODY3_US]] ], [ 0, [[FOR_BODY3]] ], [ 0, [[FOR_BODY3]] ] ; CHECK-NEXT: [[CONV:%.*]] = zext nneg i8 [[H]] to i32 ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], [[A:%.*]] ; CHECK-NEXT: br i1 [[CMP]], label [[EXIT]], label [[EXIT2:%.*]] ; CHECK: exit2: ; CHECK-NEXT: unreachable ; CHECK: exit: ; CHECK-NEXT: unreachable ; ; DBGINFO-LABEL: @PR36225( ; DBGINFO-NEXT: entry: ; DBGINFO-NEXT: br label [[WHILE_BODY:%.*]], !dbg [[DBG94:![0-9]+]] ; DBGINFO: while.body: ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[B:%.*]], metadata [[META89:![0-9]+]], metadata !DIExpression(DW_OP_constu, 0, DW_OP_eq, DW_OP_stack_value)), !dbg [[DBG95:![0-9]+]] ; DBGINFO-NEXT: br i1 [[C1:%.*]], label [[FOR_BODY3_US:%.*]], label [[FOR_BODY3:%.*]], !dbg [[DBG96:![0-9]+]] ; DBGINFO: for.body3.us: ; DBGINFO-NEXT: [[TOBOOL:%.*]] = icmp eq i32 [[B]], 0, !dbg [[DBG95]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i1 [[TOBOOL]], metadata [[META89]], metadata !DIExpression()), !dbg [[DBG95]] ; DBGINFO-NEXT: [[SPEC_SELECT:%.*]] = select i1 [[TOBOOL]], i8 0, i8 4, !dbg [[DBG97:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i8 [[SPEC_SELECT]], metadata [[META90:![0-9]+]], metadata !DIExpression()), !dbg [[DBG97]] ; DBGINFO-NEXT: switch i3 [[V1:%.*]], label [[EXIT:%.*]] [ ; DBGINFO-NEXT: i3 0, label [[FOR_END:%.*]] ; DBGINFO-NEXT: i3 -1, label [[FOR_END]] ; DBGINFO-NEXT: ], !dbg [[DBG98:![0-9]+]] ; DBGINFO: for.body3: ; DBGINFO-NEXT: switch i3 [[V2:%.*]], label [[EXIT]] [ ; DBGINFO-NEXT: i3 0, label [[FOR_END]] ; DBGINFO-NEXT: i3 -1, label [[FOR_END]] ; DBGINFO-NEXT: ], !dbg [[DBG99:![0-9]+]] ; DBGINFO: for.end: ; DBGINFO-NEXT: [[H:%.*]] = phi i8 [ [[SPEC_SELECT]], [[FOR_BODY3_US]] ], [ [[SPEC_SELECT]], [[FOR_BODY3_US]] ], [ 0, [[FOR_BODY3]] ], [ 0, [[FOR_BODY3]] ], !dbg [[DBG100:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i8 [[H]], metadata [[META91:![0-9]+]], metadata !DIExpression()), !dbg [[DBG100]] ; DBGINFO-NEXT: [[CONV:%.*]] = zext nneg i8 [[H]] to i32, !dbg [[DBG101:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i32 [[CONV]], metadata [[META92:![0-9]+]], metadata !DIExpression()), !dbg [[DBG101]] ; DBGINFO-NEXT: [[CMP:%.*]] = icmp slt i32 [[CONV]], [[A:%.*]], !dbg [[DBG102:![0-9]+]] ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i1 [[CMP]], metadata [[META93:![0-9]+]], metadata !DIExpression()), !dbg [[DBG102]] ; DBGINFO-NEXT: br i1 [[CMP]], label [[EXIT]], label [[EXIT2:%.*]], !dbg [[DBG103:![0-9]+]] ; DBGINFO: exit2: ; DBGINFO-NEXT: unreachable, !dbg [[DBG104:![0-9]+]] ; DBGINFO: exit: ; DBGINFO-NEXT: unreachable, !dbg [[DBG105:![0-9]+]] ; entry: br label %while.body while.body: %tobool = icmp eq i32 %b, 0 br i1 %c1, label %for.body3.us, label %for.body3 for.body3.us: %spec.select = select i1 %tobool, i8 0, i8 4 switch i3 %v1, label %exit [ i3 0, label %for.end i3 -1, label %for.end ] for.body3: switch i3 %v2, label %exit [ i3 0, label %for.end i3 -1, label %for.end ] for.end: %h = phi i8 [ %spec.select, %for.body3.us ], [ %spec.select, %for.body3.us ], [ 0, %for.body3 ], [ 0, %for.body3 ] %conv = sext i8 %h to i32 %cmp = icmp sgt i32 %a, %conv br i1 %cmp, label %exit, label %exit2 exit2: unreachable exit: unreachable } ; Check that we don't drop debug info when a zext is removed. define i1 @foo(i1 zeroext %b) { ; CHECK-LABEL: @foo( ; CHECK-NEXT: ret i1 [[B:%.*]] ; ; DBGINFO-LABEL: @foo( ; DBGINFO-NEXT: call void @llvm.dbg.value(metadata i1 [[B:%.*]], metadata [[META108:![0-9]+]], metadata !DIExpression(DW_OP_LLVM_convert, 1, DW_ATE_unsigned, DW_OP_LLVM_convert, 8, DW_ATE_unsigned, DW_OP_stack_value)), !dbg [[DBG109:![0-9]+]] ; DBGINFO-NEXT: ret i1 [[B]], !dbg [[DBG110:![0-9]+]] ; %frombool = zext i1 %b to i8 ret i1 %b }