| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -passes=instcombine -S | FileCheck %s |
| |
| target datalayout = "n32" |
| |
| define i32 @sterix(i32, i8, i64) { |
| ; CHECK-LABEL: @sterix( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[CONV:%.*]] = zext i32 [[TMP0:%.*]] to i64 |
| ; CHECK-NEXT: [[CONV1:%.*]] = sext i8 [[TMP1:%.*]] to i32 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul i32 [[CONV1]], 1945964878 |
| ; CHECK-NEXT: [[SH_PROM:%.*]] = trunc i64 [[TMP2:%.*]] to i32 |
| ; CHECK-NEXT: [[SHR:%.*]] = lshr i32 [[MUL]], [[SH_PROM]] |
| ; CHECK-NEXT: [[CONV2:%.*]] = zext i32 [[SHR]] to i64 |
| ; CHECK-NEXT: [[MUL3:%.*]] = mul nuw nsw i64 [[CONV]], [[CONV2]] |
| ; CHECK-NEXT: [[TOBOOL_NOT:%.*]] = icmp ult i64 [[MUL3]], 4294967296 |
| ; CHECK-NEXT: br i1 [[TOBOOL_NOT]], label [[LOR_RHS:%.*]], label [[LOR_END:%.*]] |
| ; CHECK: lor.rhs: |
| ; CHECK-NEXT: [[AND:%.*]] = and i64 [[MUL3]], [[TMP2]] |
| ; CHECK-NEXT: [[CONV4:%.*]] = trunc i64 [[AND]] to i32 |
| ; CHECK-NEXT: [[TOBOOL7_NOT:%.*]] = icmp eq i32 [[CONV4]], 0 |
| ; CHECK-NEXT: [[TMP3:%.*]] = zext i1 [[TOBOOL7_NOT]] to i32 |
| ; CHECK-NEXT: br label [[LOR_END]] |
| ; CHECK: lor.end: |
| ; CHECK-NEXT: [[CONV8:%.*]] = phi i32 [ 1, [[ENTRY:%.*]] ], [ [[TMP3]], [[LOR_RHS]] ] |
| ; CHECK-NEXT: ret i32 [[CONV8]] |
| ; |
| entry: |
| %conv = zext i32 %0 to i64 |
| %conv1 = sext i8 %1 to i32 |
| %mul = mul i32 %conv1, 1945964878 |
| %sh_prom = trunc i64 %2 to i32 |
| %shr = lshr i32 %mul, %sh_prom |
| %conv2 = zext i32 %shr to i64 |
| %mul3 = mul nuw nsw i64 %conv, %conv2 |
| %conv6 = and i64 %mul3, 4294967295 |
| %tobool = icmp ne i64 %conv6, %mul3 |
| br i1 %tobool, label %lor.end, label %lor.rhs |
| |
| lor.rhs: |
| %and = and i64 %2, %mul3 |
| %conv4 = trunc i64 %and to i32 |
| %tobool7 = icmp ne i32 %conv4, 0 |
| %lnot = xor i1 %tobool7, true |
| br label %lor.end |
| |
| lor.end: |
| %3 = phi i1 [ true, %entry ], [ %lnot, %lor.rhs ] |
| %conv8 = zext i1 %3 to i32 |
| ret i32 %conv8 |
| } |
| |
| ; https://bugs.llvm.org/show_bug.cgi?id=33765 |
| |
| @glob = external global i16 |
| |
| define void @PR33765(i8 %beth) { |
| ; CHECK-LABEL: @PR33765( |
| ; CHECK-NEXT: br i1 false, label [[IF_THEN9:%.*]], label [[IF_THEN9]] |
| ; CHECK: if.then9: |
| ; CHECK-NEXT: [[CONV:%.*]] = zext i8 [[BETH:%.*]] to i32 |
| ; CHECK-NEXT: [[MUL:%.*]] = mul nuw nsw i32 [[CONV]], [[CONV]] |
| ; CHECK-NEXT: [[TINKY:%.*]] = load i16, ptr @glob, align 2 |
| ; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[MUL]] to i16 |
| ; CHECK-NEXT: [[CONV14:%.*]] = and i16 [[TINKY]], [[TMP1]] |
| ; CHECK-NEXT: store i16 [[CONV14]], ptr @glob, align 2 |
| ; CHECK-NEXT: ret void |
| ; |
| %conv = zext i8 %beth to i32 |
| %mul = mul nuw nsw i32 %conv, %conv |
| %conv3 = and i32 %mul, 255 |
| %tobool8 = icmp ne i32 %mul, %conv3 |
| br i1 %tobool8, label %if.then9, label %if.then9 |
| |
| if.then9: |
| %tinky = load i16, ptr @glob |
| %conv13 = sext i16 %tinky to i32 |
| %and = and i32 %mul, %conv13 |
| %conv14 = trunc i32 %and to i16 |
| store i16 %conv14, ptr @glob |
| ret void |
| } |
| |
| ; Repro case for bug involving mutating a list while |
| ; iterating it. |
| |
| declare i16 @aux(i8) |
| |
| define i16 @iter_breaker(i16 %a, i16 %b) { |
| ; CHECK-LABEL: @iter_breaker( |
| ; CHECK-NEXT: [[UMUL:%.*]] = call { i16, i1 } @llvm.umul.with.overflow.i16(i16 [[A:%.*]], i16 [[B:%.*]]) |
| ; CHECK-NEXT: [[UMUL_VALUE:%.*]] = extractvalue { i16, i1 } [[UMUL]], 0 |
| ; CHECK-NEXT: [[DID_OVF:%.*]] = extractvalue { i16, i1 } [[UMUL]], 1 |
| ; CHECK-NEXT: br i1 [[DID_OVF]], label [[RET1:%.*]], label [[RET2:%.*]] |
| ; CHECK: ret1: |
| ; CHECK-NEXT: [[TRUNC_REMAIN:%.*]] = trunc i16 [[UMUL_VALUE]] to i8 |
| ; CHECK-NEXT: [[VAL:%.*]] = call i16 @aux(i8 [[TRUNC_REMAIN]]) |
| ; CHECK-NEXT: ret i16 [[VAL]] |
| ; CHECK: ret2: |
| ; CHECK-NEXT: ret i16 [[UMUL_VALUE]] |
| ; |
| %a_wide = zext i16 %a to i32 |
| %b_wide = zext i16 %b to i32 |
| %mul_wide = mul i32 %a_wide, %b_wide ; uses of %mul_wide will be iterated |
| |
| %trunc_remain = trunc i32 %mul_wide to i8 ; this use will be replaced w/ new value |
| ; when iteration visits it, switching |
| ; iteration to the uses of new value |
| |
| %trunc_unnecessary = trunc i32 %mul_wide to i16 ; uses of %trunc_unnecessary will have |
| ; been updated to uses of new value |
| |
| %did_ovf = icmp ugt i32 %mul_wide, 65535 |
| br i1 %did_ovf, label %ret1, label %ret2 |
| |
| ret1: |
| %val = call i16 @aux(i8 %trunc_remain) |
| ret i16 %val |
| |
| ret2: |
| ret i16 %trunc_unnecessary ; crash visiting this use after corrupting iterator |
| } |
| |
| ; This miscompiled because of broken pattern matching. |
| |
| define i1 @PR46561(i1 %a, i1 %x, i1 %y, i8 %z) { |
| ; CHECK-LABEL: @PR46561( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 [[A:%.*]], label [[COND_TRUE:%.*]], label [[END:%.*]] |
| ; CHECK: cond.true: |
| ; CHECK-NEXT: [[MULBOOL:%.*]] = and i1 [[X:%.*]], [[Y:%.*]] |
| ; CHECK-NEXT: [[TMP0:%.*]] = and i8 [[Z:%.*]], 1 |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i8 [[TMP0]], 0 |
| ; CHECK-NEXT: [[TMP2:%.*]] = xor i1 [[TMP1]], [[MULBOOL]] |
| ; CHECK-NEXT: br label [[END]] |
| ; CHECK: end: |
| ; CHECK-NEXT: [[P:%.*]] = phi i1 [ [[TMP2]], [[COND_TRUE]] ], [ false, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: ret i1 [[P]] |
| ; |
| entry: |
| br i1 %a, label %cond.true, label %end |
| |
| cond.true: |
| %tz = trunc i8 %z to i1 |
| %zx = zext i1 %x to i32 |
| %zy = zext i1 %y to i32 |
| %zz = zext i1 %tz to i32 |
| %mul = mul i32 %zx, %zy |
| %cond = xor i32 %mul, %zz |
| br label %end |
| |
| end: |
| %p = phi i32 [ %cond, %cond.true ], [ -1, %entry ] |
| %r = icmp eq i32 %p, 0 |
| ret i1 %r |
| } |