4a8e6ed2f7
This patch makes SLP and LV emit operations with initial vectors set to poison constant instead of undef. This is a part of efforts for using poison vector instead of undef to represent "doesn't care" vector. The goal is to make nice shufflevector optimizations valid that is currently incorrect due to the tricky interaction between undef and poison (see https://bugs.llvm.org/show_bug.cgi?id=44185 ). Reviewed By: fhahn Differential Revision: https://reviews.llvm.org/D94061
94 lines
4.4 KiB
LLVM
94 lines
4.4 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -basic-aa -slp-vectorizer -dce -S -mtriple=x86_64-apple-macosx10.8.0 -mcpu=corei7 | FileCheck %s
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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-n8:16:32:64-S128"
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target triple = "x86_64-apple-macosx10.8.0"
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%struct.GPar.0.16.26 = type { [0 x double], double }
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@d = external global double, align 8
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declare %struct.GPar.0.16.26* @Rf_gpptr(...)
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define void @Rf_GReset() {
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; CHECK-LABEL: @Rf_GReset(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = load double, double* @d, align 8
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; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x double> <double undef, double poison>, double [[TMP0]], i32 1
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; CHECK-NEXT: [[TMP2:%.*]] = fsub <2 x double> <double -0.000000e+00, double -0.000000e+00>, [[TMP1]]
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; CHECK-NEXT: br i1 icmp eq (%struct.GPar.0.16.26* (...)* inttoptr (i64 115 to %struct.GPar.0.16.26* (...)*), %struct.GPar.0.16.26* (...)* @Rf_gpptr), label [[IF_THEN:%.*]], label [[IF_END7:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: [[TMP3:%.*]] = fsub <2 x double> [[TMP2]], undef
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; CHECK-NEXT: [[TMP4:%.*]] = fdiv <2 x double> [[TMP3]], undef
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; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x double> [[TMP4]], i32 0
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; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x double> [[TMP4]], i32 1
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt double [[TMP5]], [[TMP6]]
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; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN6:%.*]], label [[IF_END7]]
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; CHECK: if.then6:
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; CHECK-NEXT: br label [[IF_END7]]
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; CHECK: if.end7:
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; CHECK-NEXT: ret void
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;
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entry:
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%sub = fsub double -0.000000e+00, undef
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%0 = load double, double* @d, align 8
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%sub1 = fsub double -0.000000e+00, %0
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br i1 icmp eq (%struct.GPar.0.16.26* (...)* inttoptr (i64 115 to %struct.GPar.0.16.26* (...)*), %struct.GPar.0.16.26* (...)* @Rf_gpptr), label %if.then, label %if.end7
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if.then: ; preds = %entry
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%sub2 = fsub double %sub, undef
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%div.i = fdiv double %sub2, undef
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%sub4 = fsub double %sub1, undef
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%div.i16 = fdiv double %sub4, undef
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%cmp = fcmp ogt double %div.i, %div.i16
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br i1 %cmp, label %if.then6, label %if.end7
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if.then6: ; preds = %if.then
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br label %if.end7
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if.end7: ; preds = %if.then6, %if.then, %entry
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%g.0 = phi double [ 0.000000e+00, %if.then6 ], [ %sub, %if.then ], [ %sub, %entry ]
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ret void
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}
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define void @Rf_GReset_unary_fneg() {
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; CHECK-LABEL: @Rf_GReset_unary_fneg(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[TMP0:%.*]] = load double, double* @d, align 8
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; CHECK-NEXT: [[TMP1:%.*]] = insertelement <2 x double> <double undef, double poison>, double [[TMP0]], i32 1
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; CHECK-NEXT: [[TMP2:%.*]] = fneg <2 x double> [[TMP1]]
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; CHECK-NEXT: br i1 icmp eq (%struct.GPar.0.16.26* (...)* inttoptr (i64 115 to %struct.GPar.0.16.26* (...)*), %struct.GPar.0.16.26* (...)* @Rf_gpptr), label [[IF_THEN:%.*]], label [[IF_END7:%.*]]
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; CHECK: if.then:
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; CHECK-NEXT: [[TMP3:%.*]] = fsub <2 x double> [[TMP2]], undef
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; CHECK-NEXT: [[TMP4:%.*]] = fdiv <2 x double> [[TMP3]], undef
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; CHECK-NEXT: [[TMP5:%.*]] = extractelement <2 x double> [[TMP4]], i32 0
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; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x double> [[TMP4]], i32 1
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; CHECK-NEXT: [[CMP:%.*]] = fcmp ogt double [[TMP5]], [[TMP6]]
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; CHECK-NEXT: br i1 [[CMP]], label [[IF_THEN6:%.*]], label [[IF_END7]]
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; CHECK: if.then6:
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; CHECK-NEXT: br label [[IF_END7]]
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; CHECK: if.end7:
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; CHECK-NEXT: ret void
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;
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entry:
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%sub = fneg double undef
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%0 = load double, double* @d, align 8
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%sub1 = fneg double %0
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br i1 icmp eq (%struct.GPar.0.16.26* (...)* inttoptr (i64 115 to %struct.GPar.0.16.26* (...)*), %struct.GPar.0.16.26* (...)* @Rf_gpptr), label %if.then, label %if.end7
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if.then: ; preds = %entry
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%sub2 = fsub double %sub, undef
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%div.i = fdiv double %sub2, undef
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%sub4 = fsub double %sub1, undef
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%div.i16 = fdiv double %sub4, undef
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%cmp = fcmp ogt double %div.i, %div.i16
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br i1 %cmp, label %if.then6, label %if.end7
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if.then6: ; preds = %if.then
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br label %if.end7
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if.end7: ; preds = %if.then6, %if.then, %entry
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%g.0 = phi double [ 0.000000e+00, %if.then6 ], [ %sub, %if.then ], [ %sub, %entry ]
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ret void
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}
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