| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt %s -passes=instcombine -S | FileCheck %s |
| |
| declare { i4, i1 } @llvm.smul.with.overflow.i4(i4, i4) #1 |
| |
| define i1 @t0_umul(i4 %size, i4 %nmemb) { |
| ; CHECK-LABEL: @t0_umul( |
| ; CHECK-NEXT: [[NMEMB_FR:%.*]] = freeze i4 [[NMEMB:%.*]] |
| ; CHECK-NEXT: [[SMUL:%.*]] = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 [[SIZE:%.*]], i4 [[NMEMB_FR]]) |
| ; CHECK-NEXT: [[SMUL_OV:%.*]] = extractvalue { i4, i1 } [[SMUL]], 1 |
| ; CHECK-NEXT: [[PHITMP:%.*]] = xor i1 [[SMUL_OV]], true |
| ; CHECK-NEXT: ret i1 [[PHITMP]] |
| ; |
| %cmp = icmp eq i4 %size, 0 |
| %smul = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 %size, i4 %nmemb) |
| %smul.ov = extractvalue { i4, i1 } %smul, 1 |
| %phitmp = xor i1 %smul.ov, true |
| %or = select i1 %cmp, i1 true, i1 %phitmp |
| ret i1 %or |
| } |
| |
| define i1 @t1_commutative(i4 %size, i4 %nmemb) { |
| ; CHECK-LABEL: @t1_commutative( |
| ; CHECK-NEXT: [[SMUL:%.*]] = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 [[SIZE:%.*]], i4 [[NMEMB:%.*]]) |
| ; CHECK-NEXT: [[SMUL_OV:%.*]] = extractvalue { i4, i1 } [[SMUL]], 1 |
| ; CHECK-NEXT: [[PHITMP:%.*]] = xor i1 [[SMUL_OV]], true |
| ; CHECK-NEXT: ret i1 [[PHITMP]] |
| ; |
| %cmp = icmp eq i4 %size, 0 |
| %smul = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 %size, i4 %nmemb) |
| %smul.ov = extractvalue { i4, i1 } %smul, 1 |
| %phitmp = xor i1 %smul.ov, true |
| %or = select i1 %phitmp, i1 true, i1 %cmp ; swapped |
| ret i1 %or |
| } |
| |
| define i1 @n2_wrong_size(i4 %size0, i4 %size1, i4 %nmemb) { |
| ; CHECK-LABEL: @n2_wrong_size( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i4 [[SIZE1:%.*]], 0 |
| ; CHECK-NEXT: [[SMUL:%.*]] = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 [[SIZE0:%.*]], i4 [[NMEMB:%.*]]) |
| ; CHECK-NEXT: [[SMUL_OV:%.*]] = extractvalue { i4, i1 } [[SMUL]], 1 |
| ; CHECK-NEXT: [[PHITMP:%.*]] = xor i1 [[SMUL_OV]], true |
| ; CHECK-NEXT: [[OR:%.*]] = select i1 [[CMP]], i1 true, i1 [[PHITMP]] |
| ; CHECK-NEXT: ret i1 [[OR]] |
| ; |
| %cmp = icmp eq i4 %size1, 0 ; not %size0 |
| %smul = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 %size0, i4 %nmemb) |
| %smul.ov = extractvalue { i4, i1 } %smul, 1 |
| %phitmp = xor i1 %smul.ov, true |
| %or = select i1 %cmp, i1 true, i1 %phitmp |
| ret i1 %or |
| } |
| |
| define i1 @n3_wrong_pred(i4 %size, i4 %nmemb) { |
| ; CHECK-LABEL: @n3_wrong_pred( |
| ; CHECK-NEXT: ret i1 true |
| ; |
| %cmp = icmp ne i4 %size, 0 ; not 'eq' |
| %smul = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 %size, i4 %nmemb) |
| %smul.ov = extractvalue { i4, i1 } %smul, 1 |
| %phitmp = xor i1 %smul.ov, true |
| %or = select i1 %cmp, i1 true, i1 %phitmp |
| ret i1 %or |
| } |
| |
| define i1 @n4_not_and(i4 %size, i4 %nmemb) { |
| ; CHECK-LABEL: @n4_not_and( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i4 [[SIZE:%.*]], 0 |
| ; CHECK-NEXT: ret i1 [[CMP]] |
| ; |
| %cmp = icmp eq i4 %size, 0 |
| %smul = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 %size, i4 %nmemb) |
| %smul.ov = extractvalue { i4, i1 } %smul, 1 |
| %phitmp = xor i1 %smul.ov, true |
| %or = select i1 %cmp, i1 %phitmp, i1 false ; not 'or' |
| ret i1 %or |
| } |
| |
| define i1 @n5_not_zero(i4 %size, i4 %nmemb) { |
| ; CHECK-LABEL: @n5_not_zero( |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp eq i4 [[SIZE:%.*]], 1 |
| ; CHECK-NEXT: [[SMUL:%.*]] = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 [[SIZE]], i4 [[NMEMB:%.*]]) |
| ; CHECK-NEXT: [[SMUL_OV:%.*]] = extractvalue { i4, i1 } [[SMUL]], 1 |
| ; CHECK-NEXT: [[PHITMP:%.*]] = xor i1 [[SMUL_OV]], true |
| ; CHECK-NEXT: [[OR:%.*]] = select i1 [[CMP]], i1 true, i1 [[PHITMP]] |
| ; CHECK-NEXT: ret i1 [[OR]] |
| ; |
| %cmp = icmp eq i4 %size, 1 ; should be '0' |
| %smul = tail call { i4, i1 } @llvm.smul.with.overflow.i4(i4 %size, i4 %nmemb) |
| %smul.ov = extractvalue { i4, i1 } %smul, 1 |
| %phitmp = xor i1 %smul.ov, true |
| %or = select i1 %cmp, i1 true, i1 %phitmp |
| ret i1 %or |
| } |